|
|
Spiders
(order Araneae, class Arachnida, subphylum
Chelicerata, phylum Arthropoda, superphylum Protostomia, subkingdom Metazoa,
kingdom Animalia, domain Eukarya) Discussion
of Taxonomy Source Choices
Click on arrows to show pull-down menus:
Spiders have a cephalothorax (literally "head-neck") and
an abdomen, unlike insects, which have distinct divisions between the head,
thorax and abdomen. Also, unlike insects, spiders have eight legs and
chelicerae and lack antennae and wings (which some insects do lack).
They also have spinnerets on their abdomens. Most have eight eyes,
although some have fewer; spider eye arrangements can be key to distinguish
spider families and sometimes genera, as shown by
Lynette Schimming's Spider Eye Arrangement Page on BugGuide.
Lynette generalized these patterns from spider photos on that site.
Links to the applicable family eye arrangement information are shown below
with the photos shown for each spider family. I have included this
because it is the clearest attempt to demonstrate one of the rules by which
spiders are classified. My favorite page about spiders in general is
Ed Nieuwenhuys' page describing how spiders weave silk.
Spiders have some natural enemies. One of them is an
insect:
the so-called thread-legged bug of the Stenolema genus. These bugs
wiggle constantly, and when they contact a spider web, the spider mistakes
them for prey.
All spiders are venomous, but
in the U.S. and Canada, only the
Brown Recluse and the
Black Widow
are known to do serious harm to humans via their venom. The Brown Recluse, also
called the "violin spider" because of a charactertistic dark marking on its
cephalothorax, is often found indoors in old houses not protected by pest
control and is most common in the south central part of the U.S. Black Widows are generally found outside.
The tarantulas of the Southwestern U.S. sometimes bite in self-defense and can
toss spine-like hairs at their attackers. The North
American Funnel Web Spiders (members of the Agelenidae family) should not be
confused with the highly venomous Sydney (Australia) Funnel Web Spiders (Atrax
robustus), which are members of another suborder altogether (the Mygalomorphae).
There is much concern and
some myths about
the Hobo Spider (Tegenaria agrestis), an Agelenidae family member.
However, other spiders can inflict painful nips under some
circumstances. I once was surprised in Florida by a large wolf spider that had
crawled into my shoe when I put it on; it left two small, relatively deep
indendations in my callused big toe.
There is one endangered North Carolina spider species,
i.e., the
Spruce Fir Moss Spider. As the name implies, the spider's
natural habitat is found in the Southern Appalachians, among these northern
conifers, at elevations above ~5400 feet.
John and Jane Balaban provided many identifications (not all specified
below),
especially of crab spiders, on their own initiative, which we checked out.
We accept responsibility for the correctness of these IDs.
In any case, feel free to contact us
or write to the
forum and comments page.
Purseweb
Spiders (Sphodros genus, Atypidae family,
Mygalomorphae suborder)
Mygalomorphs are generally large spiders; though they seem to
be the species most likely to inspire arachnophobia, all of the US species are
harmless to humans. True
Tarantulas (family Theraphosidae) are members of this suborder; some are found
in the Southwestern US.
The Atypidae are sometimes known as "atypical tarantulas."
There are two genera in the US: Atypus and Sphodros.
 |
|
| Male
Purseweb Spider
(Sphodros atlanticus),
Eno River State Park, Fews Ford access, top
of Cox Mountain, Orange County, North Carolina, 5/27/06.
Family
ID thanks to John and Jane Balaban,
referring to
BugGuide's Purseweb Spider page. Genus, species and sex ID thanks to
Jeff Hollenbeck. |
|
Trapdoor Spiders (Ctenizidae
family, Mygalomorphae suborder)
 |
 |
|
|
|
| Trapdoor
spider, Hope Mills, NC. Photo taken by Samantha Adkins-Witmill. |
Same trapdoor
spider. Photo also taken by Samantha Adkins-Whitmill |
|
|
|
Folding-door Spiders (Antrodiaetus
genus, Antrodiaetidae
family, Mygalomorphae suborder)
 |
|
|
|
|
| Folding-door
Spider (Antrodiaetus microunicolor), Yadkinville, Yadkin County, NC, 11/30/10.
Photo by Brandon Frye. |
|
|
|
|
(Crevice Weavers, Filistatidae family, Haplogynae
suborder, Araneomorphae)
 |
|
|
|
|
| Southern House Spider
(Kukulcania hibernalis)about half an inch long. Oviedo, Seminole
County, FL, 7/18/11. Photo by Kurt Amesbury |
|
|
|
|
Common Orb
Weavers
(Araneidae family, Araneoidea, Orbiculariae,
Entelegynae, Araneomorphae)
Araneus Genus Eye Arrangement (Schimming): This seems very similar to
the eye arrangements of other Araneidae family members to me. However,
to see close-up photos of eye arrangements of the Araneidae family, go
halfways down the page of
Spider Eye Arrangements (Schimming).
Spinning
mainly vertical flat, spiral-patterned webs ("orbs") is characteristic of
most these spiders, but it is not the most important taxonomically.
Arachnologists consider anatomical structure and behavior to be more important
than web characteristics, as exemplified by
Willey and Johnson (1992).
Spiny Orb
Weavers
(Micrathena genus, Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
These orb weavers have traditionally been considered to be in
this family, and I'm betting it will be official in the final classification
scheme. But their genus seems not to have come up for consideration yet.
Micrathena gracilis
These spiders, commonly known as Spined Micrathenas,
have eight black spines on a mostly white abdomen.
 |
 |
 |
|
|
|
|
Spined Micrathena
(Micrathena gracilis), Durham, 7/28/05. This spider had spun a web
across a walking path in my neighborhood that was high enough not to be
disturbed by people. |
Spined Micrathena (Micrathena gracilis), Riverbend Park, Catawba
County, 9/24/09 |
Male
Spined Micrathena (Micrathena gracilis), Third Fork Creek Trail,
Curham, NC, 7/4/12.
ID thanks to
John and Jane Balaban. |
|
|
|
Micrathena mitrata
These spiders have just two spines on their abdomens. ID based
on remarks about this species near the bottom of the Micrathena Gracilis page of
the
University of Arkansas' Arthropod Museum Notes.
 |
 |
 |
 |
| Micrathena mitrata,
Penny's Bend Nature Preserve, Durham County, NC, 9/7/07. |
Chatham County, NC, 11/9/05. This one
was about ¼ inch long. |
Mason Farm Biological Reserve, 9/8/05.
The two spines are not obvious here. |
Micrathena mitrata, ventral view. Riverbend Park, Catawba County,
NC, 9/24/09 |
Arrow-shaped Micrathenas
(Micrathena sagittata)
 |
 |
 |
|
Arrow-shaped
Micrathena
(Micrathena sagittata), Eno River SP, Old
Cole Mill Road access, 7/30/05. This spider was in the process of
web-spinning. |
Another
Arrow-shaped Micrathena
spider found in the same general area. |
Arrow-shaped Micrathena (Micrathena sagittata), Mason Farm
Biological Reserve, Orange County, NC, 8/12/08 |
Crablike Spiny Orb Weavers
(Gasterocantha cancriformis, Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
These spiders may look like crabs, but they feel like
sandspurs if you have the wrong kind of encounter with them. Perhaps
because birds have learned to avoid them, they often feel free to spin their
webs across trails.
 |
 |
 |
 |
 |
 |
 |
| Crablike Spiny Orb Weaver
(dorsal view), St. Augustine, St. Johns County, FL, 3/12/13 |
Same Crablike Spiny Orb
Weaver (ventral view) |
Crablike
Spiny Orb Weaver, Cypress Gardens, Berkeley County, South Carolina,
10/12/07.
See other
spiders. |
Crablike Spiny Orb Weaver (dorsal view), Carolina Beach State Park, New
Hanover County, NC, 8/4/09 |
Crablike Spiny Orb Weaver
(Gasteracantha cancriformis), Carolina Beach State
Park, New Hanover County, NC, 6/23/06 |
Crablike Spiny Orb Weaver,
same spider |
Crablike Spiny Orb Weaver,
Fort Fisher Basin Trail, New Hanover County, NC,
6/22/06 |
Star-bellied Orb Weavers
(Acanthepeira stellata, Araneidae family,
Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
 |
 |
 |
 |
|
Star-bellied Orb Weaver (mostly ventral view), Penny's Bend Nature
Preserve, Durham, NC, 8/23/09. |
Star-bellied spider, Mason Farm
Biological Reserve, Orange County, NC, 8/28/05. This one reminds of
part of a cuckoo clock my mother once had! |
Star-bellied spider, Indian
Creek Trail, a Jordan Lake Game Land, Chatham County, NC, 7/7/06:
ventral view on left, dorsal on right. |
Triangulate Orb Weavers
(Verrucosa arenata, Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
 |
 |
 |
 |
|
Triangulate Orb Weaver
(Verrucosa arenata), Indian Creek
Wildlife Observationa Trail, Chatham County, NC, 8/2/05 |
Triangulate
Orb Weaver, Little River Park, Orange County, NC, 10/20/07 |
Triangulate Orb
Weaver (Verrucosa arenata),
Mason Farm Biological Reserve, Orange
County, NC, 9/18/05. |
Triangulate Orb
Weaver
(Verrucosa arenata), White Pines Nature
Preserve, Chatham County, NC, 9/25/05. ID based on the
State of Missouri's spiders page.
|
Araneus
genus members,
Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae
Araneus and Neoscona are very similar genera, and many
of these photos were not taken at an angle that reveals the one tiny difference
(the posterior dorsal longitudinal groove), as described at
American Museum of Natural History's Orb Weaver Page. So many of these
are guesses.
Araneus marmoreus
(Marbled Orb Weavers)
These pictures illustrate the variation in abdominal
patterns occuring among members of this species.
 |
 |
 |
 |
 |
 |
 |
|
|
Marbled Orb Weaver
(Araneus marmoreus),
Johnston Mill Nature Preserve, Orange County, NC, 9/27/07 |
Marbled Orb Weaver,
Eno River State Park, Orange County, NC, 10/9/06. |
Marbled Orb Weaver?,
Nova Scotia, Canada, 10/18/07. Photo taken by Nancy Crowell.
ID is uncertain, since Nova Scotia may have some spider species unique
to the area. |
Marbled Orb
Weaver, Sybertsville, PA, 9/26/08. Photo by Ted Reinmiller. |
Marbled Orb Weaver (Araneus marmoreus),
Durham, NC, 9/27/05. |
Marbled Orb Weaver
(Araneus marmoreus), ventral view, Eno River State Park,
Old Cole Mill Road access, Orange County, NC, 9/16/05 |
Unusual
Marbled Orb Weaver. Photo taken by Steve Harkins, Waxhaw,
Union County, NC, 12/25/08. Not positive of ID. |
|
Cross Spider (Araneus diadematus)
 |
|
|
|
|
| Cross Spider, Ludlow, Massachusetts, 10/31/07.
Photo taken by Mark Moran. |
|
|
|
|
Araneus bicentenarius
 |
|
|
|
|
| Araneus bicentenarius, Great
Smoky Mountains. Photo taken by "Vicki." A very big
spider. |
|
|
|
|
Araneus miniatus
 |
 |
 |
|
|
|
|
|
| Orb weaver (Araneus miniatus),
Third Fork Creek Trail, Durham, NC, 1/19/13 |
Orb weaver
(male Araneus miniata), Durham, NC, 2/3/13 |
Male orb weaver (Araneus
miniatus),
Third Fork Creek Trail, Durham, NC, 1/19/13 |
|
|
|
|
|
Araneus guttulatus
 |
|
|
|
|
| Araneus guttulatus, Durham, NC,
6/14/08. A very tiny spider, about 2 mm long. |
|
|
|
|
Araneus cingulatus
A tiny and very varied species: see
BugGuide's collection:
 |
 |
|
|
|
| Araneus cingulatus,
Louisville, Kentucky, 9/24/10. Photo taken by
John Nation. |
Araneus
cingulatus, Holly Springs, NC, 10/25/10. Photo by Jason W. |
|
|
|
Araneus alboventris
 |
|
|
| Orb weaver (Araneus
alboventris), very tiny, was hanging by a strand of silk from a tree. It
had recently lost two legs, which were in the process of growing back.
Durham, NC, 10/2/09 |
|
Neoscona genus members,
Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae
Neoscona crucifera
 |
 |
 |
 |
| Hentz Orb Weaver
(Neoscona crucifera) attacking a leaf that had fallen in its
web. Durham, NC, 10/17/12 |
Spider
(Neoscona crucifera), dorsal view, Durham,
9/28/08 |
Orb weaver (Neoscona
crucifera), Durham, NC, 8/14/07. |
Spider
(Neoscona crucifera), ventral view, Durham, 9/28/08 |
Neoscona domiciliorum
 |
|
 |
 |
|
 |
 |
|
|
|
| Orb weaver
(Neoscona domiciliorum), Pettigrew State Park, Washington County, NC,
11/11/10. Dorsal view. |
|
Orb weaver
(Neoscona domiciliorum),
ventral view, White Pines Natural Area, Chatham County, 9/25/05. Maybe
another male. |
Orb weaver (Neoscona domiciliorum), Johnston's Mill
Nature Preserve, Orange County, NC, 8/25/05. Dorsal view. |
|
Orb weaver (Neoscona domiciliorum), Mason Farm Biological Reserve,
Orange County, NC, 8/9/09 |
Orb weaver
(Neoscona domiciliorum),
side view, Durham, NC, 8/30/06 |
|
|
|
Neoscona arabesca
 |
 |
|
 |
 |
|
| Orb weaver (Neoscona arabesca), Penny's
Bend Nature Preserve, Durham County, NC, 6/15/07 |
Orb weaver (Neoscona
arabesca), Pettigrew State Park, Washington County, NC, 11/11/10 |
|
Orb weaver (Neoscona arabesca), Durham,
7/6/05 |
Orb weaver (Neoscona arabesca), Durham,
NC, 5/29/08 |
|
Argiope genus,
Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae
Argiopes are standard orb weavers in that their webs are
round and flat.
White-backed Garden Spider
or Banded Argiope (Argiope trifasciata)
 |
 |
 |
 |
 |
|
|
White-backed
Garden Spider,
Durham, 9/27/05. Also very well-fed. Was
hanging out next to a large lantana patch visited by many insects. |
White-backed
Garden Spider,
Penny's Bend, Durham County, NC, 10/15/05,
ventral view |
White-backed Garden Spider.
Dorsal view of the same spider. Definitely
well-fed! |
White-backed
Garden Spider,
Mason Farm Biological Reserve, Orange
County, NC, 10/17/07
Dorsal view. |
White-backed
Garden Spider,
ventral view of the same spider. |
|
Yellow-and-black Garden Spider
(Argiope aurantia)
These are some
of the biggest spiders in eastern North America; not including their legs, they
can reach one inch in length. As a result, they are also the most familiar
outdoor spiders, though far from the most common.
 |
 |
 |
 |
|
|
|
|
|
|
|
|
Closeup of female
Yellow-and-black
Garden Spider,
Harnett County, NC, 8/10/04.
|
Yellow-and-black
Garden Spider,
Durham, NC, 10/10/09, with prey. |
Yellow-and-Black
Garden Spider,
Fayetteville, NC, 8/25/06. Taken by Adolph
Thomas. Copyright © 2006 Adolph Thomas.
|
Yellow-and-black Garden Spider,
Jordan Lake Game Land, Chatham County, NC 10/1/06 |
|
|
|
|
|
|
|
 |
 |
 |
 |
 |
|
|
Male
Yellow-and-black
Garden Spider, 9/2/04. |
Male
Yellow-and-black
Garden Spider, Indian Creek Trail, Chatham
County, 8/2/05. |
Immature
female
Yellow and Black Argiope, Durham, NC, 6/30/08. |
Immature Yellow-and-Black
Garden Spider,
Fort Fisher, New Hanover County, NC, 6/22/06. |
Immature
Yellow-and-black Argiope,
Holly Springs, NC, 10/25/10. Photo by Jason
W. |
|
 |
|
|
|
|
|
A long view of a
Yellow-and-black
Garden Spider,
Ozark, Missouri, 8/12/10. Photo by Susi
Meredith. |
|
|
|
|
Mangora genus,
Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae
Mangora placida
 |
 |
 |
|
| Orb weaver (probably Mangora placida),
dorsal view.
Penny's Bend Nature Preserve, Durham County, NC, 3/30/07 |
Orb weaver (probably Mangora placida),
dorsal view.
Johnston Mill Nature Preserve, Orange County, NC, 3/31/07 |
Mangora placida, ventral view. Eno
River State Park, Orange County, NC, 7/27/07 |
|
Mangora maculata
 |
|
 |
|
|
| Mangora
maculata, Johnston Mill Nature Preserve, Orange County, NC,
8/31/07. This may be the same species as the spider on the left. |
Mangora
maculata, Durham, NC,
8/1/07. This appears to be the same species as the spider on the
immediate left. Genus ID thanks to
Jeff Hollenbeck.
Species ID thanks to
John and Jane Balaban. |
Mangora maculata, ventral view. Eno River SP, Old Cole
Mill Road access, Orange County, NC, 8/17/05 |
|
|
Mangora gibberosa
 |
|
|
|
|
|
| Orb weaver
(Mangora gibberosa), Durham, NC, 9/6/12 |
|
|
|
|
|
Mangora acalypha
 |
|
|
|
|
| Mangora acalypha, Finnmark
County, Norway,
2010. On the red list. Photo by Roy Erling Wrånes. |
|
|
|
|
Acacesia hamata
(Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
 |
 |
|
Acacesia hamata,
Durham, 7/18/05. ID provided by
John and Jane Balaban.
|
Spider, (Acacesia hamata), Penny's Bend Nature Preserve, Durham
County, NC, 9/7/07. This was a very tiny spider, a few mm long. Its
placement on the brown spot of this leaf camouflaged it effectively. |
Gea
heptagon
(Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
 |
 |
| Female orb weaver (Gea
heptagon), Mason Farm Biological Reserve, Orange County, NC, 11/14/10 |
Male orb weaver (Gea heptagon), Durham, NC,
8/21/06 |
Basilica
Spiders
(Mecynogea lemniscata, Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
In contrast with the flat webs of the orchard spiders, the
webs of most of these spiders fill a three-dimensional space and no two threads
seem
to be in the same plane. They often are found in groups in contiguous
webs. Maybe they get their common name from this web structure.
They do not weave orb-shaped webs;
Willey, Johnson and Adler say that although some have argued that
they should be assigned to the Linyphiidae family on the basis of similarity of
web construction; giving greater weight to anatomical structure and behavior as critera led to their Araneidae classification.
This illustrates another problem with common names: orb-weaving is not a
universal Araneidae trait.
The two pictures on the left
(second row) suggest an aborted courtship
(Durham, 7/20/05). It took place within one of a group of complex webs
with elaborate three-dimensional structures. All webs were apparently spun
by spiders of the same species, which had the abdominal patterns pictured in the
two photos on the right.
 |
 |
 |
 |
 |
|
Basilica
spider, Durham, NC, 7/6/09. Note the distinguishing green stripe
on the side of the abdomen. |
Basilica Spider, American Tobacco Trail, Durham, NC, 6/29/09 |
Basilica Spider, Durham, NC, 7/1/08. The dominant color on
the side of the abdomen is yellow. |
Basilica Spider, view of the bottom part of the abdomen, Durham, NC, 7/20/05.
It mimics an open mouth with tongue and fangs. |
Basilica spider egg
sacs. Durham, 7/31/05. With egg
sacs. |
 |
 |
 |
| Female Basilica Spider, Durham, 6/30/05, wrapping up its prey.
The green stripe is present, but hard to see. |
Basilica Spiders. The large spider approached
the smaller spider. |
Basilica Spiders. The smaller spider let the
big spider touch it with two feet for a second or two, then they quickly
separated. No accounting for taste (pun intended!) |
Larinoides cornutus
 |
|
| Larinoides cornutus,
Finnmark County, Norway, 1/30/11. Photo by Roy Erling Wrånes. |
|
Unidentified orb weavers,
Araneidae family, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae
 |
| Another orb weaver,
upstaged by its dew-adorned web at the very beginning of the day. |
Golden Silk Spiders and
Allies
(Nephilinae subfamily, Nephilidae family,
Araneoidea, Orbiculariae, Entelegynae, Araneomorphae)
Golden Silk Spiders
(Nephila clavipes)
 |
 |
 |
| Female
Golden Silk Spider
(Nephila clavipes), Carolina Beach State Park, New Hanover County, NC,
9/16/07. These are different views of the same spider: ventral, side
and dorsal. |
|
 |
 |
 |
 |
 |
|
|
|
|
|
|
Golden Silk Spider couple (big one is female), Carolina Beach State
Park, New Hanover County, NC, 8/4/09 |
Male Golden Silk Spider, Carolina Beach State Park, New Hanover County,
NC, 8/4/09 |
Golden Silk Spider (Nevila clavipes), Carolina Beach State Park, New
Hanover County, NC, 6/23/07. At first I thought it was an Argiope,
but the pattern was completely different. |
Golden Silk
Spider, Theodore Roosevelt State Natural Area Nature Trail, Pine Knoll
Shores, Carteret County, NC 7/23/08 |
Golden Silk Spider,
Ft. Fisher Basin Trail, New Hanover County, NC, 6/24/08. The variant
pattern is puzzling. |
|
|
|
|
|
Long-jawed Orb Weavers
(Tetragnathidae family, derived araneoids, Araneoidea,
Orbiculariae, Entelegynae, Araneomorphae)
Tetragnathidae Eye Arrangement (Schimming)
Elongate Long-jawed Orb
Weavers (Tetragnatha elongata)
These spiders are so named because of their unusually
large chelicerae, more
familiarly known as "fangs," which contain venom-producing
glands and end in hollow spikes through which they deliver their venom.
 |
 |
 |
Elongate
Long-jawed Orb Weaver,
Durham, NC, 8/21/09 |
Elongate Long-jawed
Orb Weaver, Durham, NC, 6/13/05.
|
This same
Elongate Long-jawed Orb Weaver sought cover on a form of swamp
grass, using impressive camouflage. |
Long-jawed Orb Weavers
(Tetragnatha versicolor)
 |
 |
 |
|
|
Long-jawed Orb Weaver,
Jordan Lake Gameland, Chatham County, NC, 6/19/07 |
Long-jawed Orb
Weaver,
Durham, NC, 4/28/06 |
Long-jawed orb
weaver (Tetragnatha versicolor), Durham, NC, 6/9/11 |
|
Long-jawed Orb Weavers
(Tetragnatha viridus)
 |
|
|
|
|
|
| Long-jawed orb weaver
(Tetragnatha viridis), Third Fork Creek Trail, Durham, NC,
11/19/12 |
|
|
|
|
|
Pachygnatha degeeri
 |
|
| Pachygnatha degeeri,
Finnmark County, Arctic
Norway, 1/30/11. Photo by Roy Erling Wrånes. |
|
Orchard Spiders
(Leucage venusta)
Some very beautiful small spiders are
easily overlooked. Orchard Spiders are about 3 mm long (excluding legs) at
maturity. Their appearance varies widely with region.
 |
 |
 |
 |
|
Orchard
Spider,
Carolina Beach State Park, New Hanover County, NC, 9/17/07 |
Orchard
Spider, Durham, NC, 5/27/09 |
Orchard Spider,
Audubon
Swamp Garden, Charleston County, SC, 10/11/07. |
Another
Orchard Spider,
Audubon Swamp, Charleston County, SC 10/11/07 |
 |
 |
 |
|
|
|
|
|
| Orchard Spider, Durham, NC,
9/19/12. Dorsal view |
Orchard Spider,
Goose Creek State Park, Beaufort County, NC, 9/20/08. Dorsal view. |
Orchard Spider, Durham,
6/17/05. Dorsal view. |
|
|
|
|
|
Comb-footed Spiders
(Theridiidae family, Theridioidea, Araneoid
sheetweb weavers, Reduced pyriform clade, Derived Araneoids, Araneoidea, RTA
Clade, Entelegynae, Araneomorphae)
Theridiidae Eye Arrangement (Schimming)
These spiders spin cobwebs, which humans detest and songbirds
love to use for nesting material. They are small and compact,
eventually becoming frayed and indistinct, and
probably not especially effective in catching flying insects. But they
frequently catch insects crawling up the sides of houses.
American House Spiders
(Achaearanea tepidariorum)
 |
 |
 |
 |
 |
|
American House Spider
(Achaearanea tepidariorum) attacking a Marbled Orb Weaver, Johnston Mill
Nature Preserve, 7/15/06 |
American House Spider
(Achaearanea tepidariorum) with egg sac. Durham, 7/22/05 |
American House
Spider,
Durham, NC, 8/10/07 |
American House Spider
with egg sac. Durham, 6/14/05. One of the larger spiders I've seen. |
American House Spider
with prey, Durham, NC, 7/6/05 |
Theridion pictipes
 |
|
Comb-footed spider (Theridion pictipes), Johnston Mill Nature Preserve,
Orange County, NC, 5/31/07. ID thanks to
John and Jane Balaban. |
Asagena americana
 |
|
|
|
|
| Cobweb spider
(Asagena americana), Hanging Rock State Park, Stokes County, NC,
5/22/08 |
|
|
|
|
Widow Spiders (Latrodectus genus members) use a neurotoxic venom.
They are outdoor spiders; some are reclusive, while others appear out in the
open. It is unusual to see a male; they are much smaller and very different in appearance. These spiders are venomous at every age. It is best to be
observant.
Southern Black Widow
(Latrodectus mactans)
The characteristic marking is a red
hourglass (really two opposing triangles fused) on the ventral side of the
abdomen. There are no red markings on the dorsal side.
 |
|
Adult female
Southern Black Widow?,
Zebulon, NC. Photo taken by and provided by Cindy Privette.
Species ID uncertain because the red hourglass figure is partially obstructed. |
Northern Black Widow (Latrodectus variolus)
The characteristic marking is a divided red hourglass figure on the ventral
side of the abdomen. The dorsal side typically has three or more red
spots.
 |
 |
 |
|
|
|
|
|
|
Adult male (note the larger
pedipalps) Northern Black Widow
Spider (Latrodectus mactans), Durham, NC, 5/27/09. This spider is also shown
in the picture on the right. |
Male and female Northern Black Widow Spiders, Durham,
NC, 5/29/09. The
female was much more reclusive and had made a rare trip outside this
dark hiding place. The other disappeared after a couple of days. |
Adult female Northern Black Widow, Durham, NC,
7/22/09. Note dorsal red spots on abdomen. You can also see how the
web is becoming frayed, filling a particular small space. |
|
|
|
|
|
Immature black widows
Stripes characterize immature black widows that are past the spiderling
stage.
 |
 |
_small.JPG) |
|
|
|
|
|
Black widow spiderling, one of a large group near
a rock crevice on a power line cut in Durham, NC, 10/15/08. Might be a
Southern Black Widow, but not sure. It matches this
BugGuide picture of Missouri spiderlings. |
Immature Western Black
Widow (Latrodectus hesperus), Tulare, CA, 10/20/10. Photo by Rebecca Mustin.
Another example, from Texas by
Joe Lapp. |
Immature black widow,
which was attacking a large fly, Eno River State Park, Orange County, NC,
4/24/10 |
|
|
|
|
Brown Widows
(Latrodectus geometricus)
 |
|
|
|
|
|
| Brown Widow
(Latrodectus geometricus), Lakeland, FL, 11/28/10. Copyright © 2010
Noella T. Martell Segura. |
|
|
|
|
|
False Black Widow (Steatoda grossa)
 |
 |
|
|
|
|
|
|
False Black Widow
(Steatoda grossa), venomous but less dangerous than black widows. Durham,
NC, 12/30/05.
|
False Black Widow
spiderling, Third Fork Creek Trail, Durham, NC, 12/8/12 |
|
|
|
|
|
Steatoda bipunctata
 |
|
| Steatoda bipunctata,
Finnmark County, Norway, 1/30/11. Photo by Roy Erling Wrånes. |
|
Brown Recluse (Loxosceles genus,
Sicariidae family, Haplogynae, Araneomorphae)
Sicariidae Eye Arrangement (Schimming): These spiders have only six
eyes.
There are six brown recluse species in the USA;
Loxosceles reclusa is the most widespread, with the center of its range in
Arkansas. The others are found in Mexico and near its border with with
the USA.
 |
|
|
|
|
| Brown Recluse (Loxosceles
reclusa), Rogers, Arkansas, 11/28/10. Photo taken by Todd Nida. |
|
|
|
|
Sheet Web Weaver and Dwarf
Spiders
(Linyphiidae Family, Linyphioids, Araneoid sheetweb
weavers, Reduced pyriform clade, Derived araneoids, Araneoidea, Orbiculariae,
Entelegynae, Araneomorphae)
Linyphiidae Eye Arrangement (Schimming)
All photos in the first row were taken of
members of the species Florinda coccinea,
subfamily Linyphiinae
member, according to
Wikipedia's Blacktailed Red Sheetweaver page and
Samford University's Florinda coccinea page. Levi and Levi
(2002) describe this species as yellow-colored (rather puzzling) and most
commonly found in the southeastern US.
This spider family has the most species, although its members
are very tiny and probably overlooked altogether by most people. The two
shown below are apparently the most common in Piedmont North Carolina.
Black-tailed Red
Sheetweavers (Florinda coccinea)
These spiders usually spins their webs, in the form of
horizontal sheets, near the ground in grasses.
 |
 |
 |
 |
|
Black-tailed Red
Sheetweaver,
Durham, NC, 8/6/05,
at edge of local swamp, but still deep in swamp grass. About ¼ inch
long.
|
Black-tailed Red
Sheetweaver,
same location,
9/3/05. According to Patrick Moran, this is a male spider; the others
are females. The large pedipalps are the key. |
Black-tailed Red
Sheetweaver,
Durham, NC, 7/16/05,
local swamp. Possibly the same species as at left, but maybe not as
well-fed. |
Black-tailed Red
Sheetweaver,
Johnston Mill
Nature Preserve, Orange County, NC, 9/30/06. This picture was taken on
a cool morning when the dew was still on its web. |
Bowl-and-doily
Spiders (Frontinella communis)
These
spiders have typically showed up in the branches of small trees. Their
webs have two parts, one that is bowl-shaped and another below it that is
disk-shaped and looks like a doily. When prey lands on the "doily," the
spider leaps down from the "bowl" and attacks it.
 |
 |
 |
 |
 |
|
|
Female Bowl-and-doily Spider, Johnston Mill Nature Preserve, Orange
County, NC, 4/18/09. This variant pattern is puzzling, may be due
to wear. |
Female
Bowl and Doily Spider,
Mason Farm Biological Reserve, 11/21/07 |
Female
Bowl and Doily Spider,
Eno River State Park, 10/18/07 |
Male
Bowl and Doily Spider,
Mason Farm Biological Reserve, Orange
County, NC, 8/12/08 |
Female Bowl-and-doily Spider
on a streetlamp pole, Durham, NC, 11/20/12 |
|
Filmy Dome Spiders
(Prolinyphia marginata)
 |
 |
 |
 |
|
|
|
| Filmy Dome Spider with fly prey,
Congaree National Park, Richland County, SC, 4/30/11 |
Filmy Dome Spider, Johnston Mill Nature Preserve, Orange County, NC,
8/18/06. ID thanks to John Robinson, confirmed by
Samford University's relevant page.
|
Filmy
Dome Spider, Johnston Mill Nature Preserve, Orange County, NC, 7/30/09 |
Filmy Dome Spider,
Korstian division, Duke Forest, Orange County, NC, 5/3/06 |
|
|
|
Diplocephalus cristatus
| |
 |
| |
Diplocephalus cristatus,
Finnmark County, Norway, 1/30/11. Photo by Roy Erling Wrånes. |
Ghost Spiders
(Anyphaenidae family, Entelegynae, Araneomorphae)
Anyphaenidae Eye Arrangements (Schimming)
Funnel Web
Spiders
and Grass Spiders
(Agelenidae family, Other Amaurobioids, RTA Clade,
Entelegynae, Araneomorphae)
Agelenidae Eye Arrangements (Schimming)
Funnel web spiders have a two-part web consisting of a horizontal
sheet which catches prey and a funnel-shaped tunnel in which the spider hides.
In this way, these harmless (to humans) spiders bear a superficial resemblance
to the highly venomous Sydney (Australia) Funnel-web Spiders, members of the
Hexathelidae family, suborder Mygalomorphae. This is a classic
example of how common names can cause serious confusion, not the least because
web shape is a relatively unimportant spider classification factor.
On our deck, funnel web spiders
spin horizontal webs that attach at one end to large round lights, curving
partially around them across to the "funnel" end of the web. Moths drawn
to the light find themselves trapped in the web because the web partially blocks
their departure from the light. The web isn't sticky and sometimes moths
find their way out. Yet sometimes the spider is faster, jumping up to bite
a flying moth, which lands on the web. Since these lights are such a
recent development in natural history, these spiders' strategic use of them
looks a lot like human-like engineering reasoning. But spiders don't even
have real brains: a single ganglion (a bundle of nerves) serves instead.
Grass spiders (Agelenopsis genus) are small and very
common, often seen running along the ground.
In general, it is not possible to identify definitively
the species of individual Agelenopsis genus spiders with only a dorsal view.
The infamous Hobo Spider (Tegenaria agrestis), found in
the western US, is a member
of this family, but not easy to identify. There is some controversy
about their having a dangerous bite, but clear scientific evidence remains to
be produced. Some points of view:
http://www.arachnology.org/Arachnology/Pages/Hobo.html.
The spiders in this row are seen in summer mode, catching
prey out in the open:
 |
 |
 |
 |
 |
 |
| Funnel web spider,
with part of web on bush. A sight often overlooked. American
Tobacco Trail, Durham, NC, 9/29/11 |
Funnel Web Spider,
emerging from the "funnel" part of its web among pine needles, Piedmont Wildlife
Center, Durham, NC, 5/8/10 |
Funnel web spider (probably
Agelenolopsis genus), Johnston Mill, Orange County, NC, 7/1/06 |
Funnel web spider, Boone, Watauga
County, NC, 8/7/06 |
Funnel web spider with moth prey, Durham, NC, 9/24/08.
|
Funnel web spider?
Eno River State
Park, Old Cole Mill Road access, 5/10/07, ventral view. The light color
suggests that it's a recent molt. |
We know less about how funnel web spiders function
in the winter, but this group of spiders (which may or may not be members of
the same species as above) hid in white cocoon-like enclosures beneath the
bark of a rotting tree:But they are much tougher than moth cocoons and
probably do an excellent job of protecting spiders from cold.
 |
 |
|
|
|
| Funnel web
spider, Durham, NC, 2/27/11. This web didn't have an obvious
funnel shape. |
Cocoon-like
structures containing spiders, Durham, NC, 2/27/11. |
|
|
|
Nursery Web
Spiders and Fishing Spiders
(Pisauridae family, Lycosoidea, RTA Clade,
Entelegynae, Araneomorphae)
Pisauridae Eye Patterns (Schimming)
These spiders are noted both for their ability to walk on
water and for their spiderlings, which stay together until relatively large.
Their only use of silk is to build their "nursery webs."
Six-spotted Fishing Spiders
(Dolomedes triton)
 |
 |
|
Six-spotted Fishing Spider (Dolomedes
triton) with sea snail, Durham, NC, 5/03/05 |
 |
|
 |
| Six-spotted
Fishing Spider, Durham, NC, 6/9/11 |
|
Six-spotted Fishing Spider,
NC Botanical Garden, Orange County, NC, 8/17/06.
|
Dark Fishing Spiders
(Dolomedes tenebrosus)
 |
 |
 |
 |
 |
|
|
|
|
| Male Dark
Fishing Spider (Dolomedes tenebrosus), Durham, NC, 6/6/11 |
Dark Fishing
Spider (Dolomedes tenebrosus), Eno River State Park (Old Cole Mill
Rd. access), Orange County, NC, 3/24/11 |
Dark Fishing
Spider (Dolomedes tenebrosus), Cherryville, Gaston County, NC,
5/30/11. Photo by Destiny Canipe. |
Dark Fishing
Spider (Dolomedes tenebrosus), seemed to be injured at first glance but was simply completely
limp. It was large and apparently old. Third Fork Creek
Trail, Durham, NC, 7/18/11 |
Dark Fishing Spider
(Dolomedes tenebrosus)?, indoors. Photo by Michaela Brown.
ID is uncertain: markings aren't typical. |
|
|
|
|
 |
 |
|
Dark Fishing Spider
(Dolomedes tenebrosus),
a lake in Illinois, 7/9/07, taken by Danielle
Lessing. © 2007 Danielle Lessing |
This picture gives a better picture of
how big this Dark Fishing Spider was. Ms. Lessing said it seemed to be five inches
across. |
Nursery Web Spiders
(Pisaurina genus)
 |
 |
 |
 |
 |
|
Nursery Web Spider
(Pisaurina mira?),
Durham, NC, 6/22/05. |
Nursery Web Spider (Pisaurina
mira?),
Durham, NC, 8/14/08 |
Nursery Web Spider
(Pisaurina mira) |
Nursery Web Spider (Pisaurina mira), Geithner Park, Hickory,
Catawba County, NC, 9/25/09 |
I'm guessing these are
Nursery Web
spiderlings. Eno River SP, Old Cole Mill Road access, Orange County,
NC, 9/16/05. |
 |
 |
|
|
|
|
|
| Nursery web spider
(Pisaurina dubia) |
Nursery web spider
(Pisaurina mira), Third Fork Creek Trail, Durham, NC, 9/12/12 |
|
|
|
|
|
Wolf Spiders
(Lycosidae family, Lycosoidea, RTA Clade,
Entelegynae, Araneomorphae)
Lycosidae Eye Patterns (Schimming)
These are very big spiders at maturity. Although they
are not known to administer venomous bites, I once had a close call with a
full-size Wolf Spider: it had found its way into an empty shoe and surprised me
with a painful nip that left deep indentations on my heavily callused toe when I
put the shoe on.
 |
 |
 |
|
Giant Wolf Spider
(Hogna carolinensis),
Johnston Mill Nature Preserve, Orange County, NC, 11/27/07 |
Giant Wolf Spider
(Hogna carolinensis),
Durham, NC, 12/8/09 |
Giant Wolf Spider
(Hogna carolinensis), Durham,
NC, 3/22/06. This
relatively large spider was scrambling around
on the edge of a creek, sometimes in the water, sometimes on leaves or
blades of grass. |
 |
 |
 |
 |
 |
|
|
|
|
|
| Wolf spider,
Durham, NC, 1/12/13 |
Wolf spider, Sandy
Creek Park, Durham, NC, 3/19/10 |
Wolf spider,
Durham, NC, 2/16/08 |
This large wolf spider was carrying a
bunch of spiderlings on her abdomen at Johnston Mill, Orange County, NC,
7/15/06. |
Wolf spider, Durham,
NC, 10/28/05 |
|
|
|
|
|
 |
 |
 |
 |
|
|
|
|
| Wolf
spider, Durham, NC, 11/25/09 |
Lance Wolf
Spider (Schizocosa avida), Durham, NC, 11/1/06 |
Wolf spider
(Pardosa genus, maybe milvina species), Durham, NC, 4/25/08 |
Wolf spider
with egg sac, Durham, NC, 4/30/10 |
|
|
|
|
 |
 |
 |
 |
|
|
|
|
| Rabid Wolf
Spider, relatively large and moving fast, at the Mason Farm
Biological Reserve, Orange County, NC, 11/22/11 |
Rabid Wolf Spider (Rabidosa
rabida), Penny's Bend Nature Preserve, Durham, NC, 8/31/08 |
Rabid Wolf Spider
(Rabidosa rabida), a Jordan Lake gameland, 6/19/07 |
Wolf spider,
Alopecosa genus. Durham, NC, 4/19/11 |
|
|
|
|
Lynx Spiders
(Oxyopidae family, Lycosoidea, RTA Clade,
Entelegynae, Araneomorphae)
Oxyopidae Eye Arrangement (Schimming)
Green Lynx Spider (Peucetia viridans)
 |
 |
 |
 |
|
Green Lynx Spider
(Peucetia
viridans), NC Botanical Garden, Orange County, NC, 7/17/09 |
Green Lynx Spider(Peucetia
viridans),
Durham, 7/16/05. This one showed up in my local marsh. |
Green Lynx Spider
(Peucetia
viridans),
Indian Creek Trail, a Jordan Lake Game Land,
Chatham County, NC, 9/3/06 |
Female Green Lynx Spider,
in fall brown coloring, central Florida, 11/16/11. Photo taken by
Chester Wheeler |
Striped Lynx Spider (Oxyopes salticus)
 |
 |
 |
|
|
| Striped Lynx Spider
(Oxyopes salticus), Durham, NC, 7/29/12 |
Striped Lynx Spider (Oxyopes salticus), with small green prey,
Boone, NC, 8/6/08 |
Striped Lynx Spider, with large black prey, Durham, 8/16/08. |
|
|
Crab
Spiders
(Thomisidae family, Dionycha, RTA Clade,
Entelegynae, Araneomorphae)
Thomisidae Eye Arrangement (Schimming)
These spiders don't spin webs; instead, they wait in ambush
for their prey.
Smooth Flower Spider or
White-banded Crab Spider (Misumenoides formosipes)
 |
 |
 |
 |
 |
|
|
This female
Smooth Flower Spider
or White-banded Crab Spider
(Misumenoides formosipes) was apparently eating a fly on Siler's Bald in
Macon County, NC, on 8/10/05. |
Female
Smooth Flower Spider
or
White-banded Crab Spider
(Misumenoides
formosipes) with Eastern Tailed Blue prey on Brazilian Verbena, Durham, NC, 9/28/08 |
Smooth
Flower Spider
(Misumenoides formosipes) assuming yellow color and
attacking a bumblebee. Mason Farm Biological Reserve, Orange
County, NC, 9/19/11 |
Female
Flower Spider or White-banded Crab Spider (Misumenoides
formosipes, Thomisidae family), on a Little-leaf Sensitive Briar flower,
Riverbend Park, Catawba County, NC, 9/24/09 |
Male Smooth Flower
Spider, Mason Farm Biological
Reserve, Orange County, NC, 8/12/08 |
|
Goldenrod Spider (Misumena vatia)
 |
 |
|
|
| Female Goldenrod
Crab Spider, Tanawha
Trail, Avery County, NC, 7/1/10 |
Male Goldenrod Crab Spider, Durham, NC, 9/7/12 |
This male Goldenrod Crab Spider (Misumena vatia) was busily spinning a web.
It looks as though this spider has only three legs; however, its two
hind pairs are small and light-colored and didn't come out in these
photos. The spider is missing one of its large black forelegs. Eno River SP, Old Cole Mill Road access, Durham
County, NC, 9/16/05. |
|
Mecaphesa (formerly Misumenops) genus
 |
 |
 |
 |
|
|
|
|
| Crab spider(Mecaphesa
asperata), Blue Ridge Parkway, Avery County, NC, 8/2/12 |
Crab Spider (Mecaphesa genus,
formerly known as Misumenops),
Durham, NC, 8/13/05.
Apparently lying in wait
for prey. |
Crab Spider
(Mecaphesa genus)
North Carolina Museum
of Art outdoor trail, Wake County, NC, 5/8/07, with grasshopper prey. |
Female
Flower Spider
(Mecaphesa asperata), Mason Farm Biological
Reserve, Orange County, NC, 10/2/05.
|
|
|
|
|
Synema genus
 |
 |
 |
|
|
| Crab spider
(Synema parvulum), Third Fork Creek Trail, Durham, NC, 1/4/13 |
Crab spider (Synema
parvulum) with spider prey, Durham, NC, 3/17/12 |
Tiny crab spider
(Synema parvulum), with prey, Indian Creek Trail, a Jordan Lake Game Land, Chatham
County, NC, 7/7/06. |
|
|
Xysticus genus
 |
 |
 |
| Crab spider (Xysticus genus) with egg
sac. Flat River Waterfowl Impoundment, NC, 8/15/10 |
Crab spider
(Xysticus genus). Durham (swamp in my neighborhood), NC, 9/22/05. |
Crab spider
(Xysticus genus), Durham, NC,
10/1/05. Also found in local swamp. This spider was about ⅛ inch long. |
 |
 |
 |
| Crab Spider,
Wannamaker County Park, Charleston County, SC,
3/28/06 |
Crab spider,
White Pines Nature Preserve, Chatham County, NC, 11/11/06 |
Crab spider with ant prey, Durham, NC, 5/27/09 |
Misumessus genus
 |
 |
 |
| Crab spider
(Misumessus oblongus), Durham, NC, 6/8/12 |
Crab spider (Misumessus
oblongus), a very young spider. ID confirmed by
Joe Lapp. |
Crab spider
(Misumessus oblongus), Eno River SP, Old
Cole Mill Road access, Orange County, NC, 6/23/05. This one showed up
on my car. |
Tmarus genus
 |
 |
|
|
|
|
|
| Crab spider (Tmarus
genus), Durham, NC, 7/2/12. ID thanks to
John and Jane Balaban.
|
Crab
spider (Tmarus genus), Durham, NC, 10/10/12 |
|
|
|
|
|
Bassaniana genus?
 |
|
|
|
|
|
|
Crab Spider, Bassaniana genus maybe, Southern Village, Chapel Hill, NC,
5/7/09 |
|
|
|
|
|
Unidentified Crab Spiders
 |
 |
|
|
|
|
|
|
Crab Spider, Durham, NC, 8/17/06. Showed up on door to our deck. |
Crab spider,
Durham, NC, 5/17/08 |
|
|
|
|
|
Running Crab Spiders (Philodromidae family,
Dionycha, RTA Clade,
Entelegynae, Araneomorphae)
Philodromidae Eye Arrangement (Schimming)
 |
 |
 |
 |
|
 |
|
| Male running crab spider,
maybe Ebo genus, Durham, NC, 1/5/13 |
Running crab
spider (Philodromidae family), Congaree National Park, SC, 4/30/11. ID thanks to John and Jane Balaban,
confirmed by Lynette Schimming. |
Running crab spider (Philodromus genus perhaps), Durham, NC, date
unknown. ID thanks to
John R. Maxwell. |
Metallic Crab Spider (Philodromus maxi) spider, Johnston Mill Nature Preserve, Orange County, NC,
6/9/07 |
|
Philodromus
fuscamarginatus, Finnmark County, Norway, 1/30/11. Photo by Roy
Erling Wrånes. |
|
Ground Spiders
(Gnaphosidae family, Gnaphosoidea, Dionycha, RTA
Clade, Entelegynae, Araneomorphae)
Gnaphosidae Eye Arrangment (Schimming)
These are mainly nocturnal spiders that hide under rocks
during the day, but every now and then we get a glimpse of them scurrying across
a walking path. They may be often overlooked because they look like
ants from a distance. However, they should not be confused with the
"ant-mimic" spiders of Corinnidae, which look like brown ants up close.
 |
 |
 |
 |
 |
|
Gnaphosa muscorum?
Durham, NC, 6/9/05. You can see only six legs, but
this small (magnified) spider apparently lost some. |
Gnaphosa muscorum?Durham,
NC,
6/16/05. The abdomens have different colors and different numbers of
spots. |
Ground spider (Sergiolus capulatus),
Durham, NC, 2/17/06 |
Ground spider
(Cesonia bilineata), McAfee's Knob, Roanoke County, VA, 1/1/12 |
Ground spider (Cesonia bilineata),
Durham, NC, 6/13/06. |
Ant Mimic Spiders (Corinnidae family,
Gnaphosoidea,
Dionycha, RTA Clade, Entelegynae, Araneomorphae)
Corinnidae Eye Arrangement (Schimming)
Ground sac spider (Castianeira longipalpa)
 |
 |
 |
 |
 |
|
| Ground Sac Spider
(Castianeira longipalpa), Third Fork Creek Trail, Durham, NC, 6/6/11 |
Ground sac
spider
(Castianeira longipalpa), American Tobacco Trail (miles 0-2), Durham, NC,
5/2/10 |
Ground sac spider (Castianeira longipalpa),
Southpoint Swamp, Durham, NC, 9/26/07, a moderate-sized spider.
Thanks to
Lynette Schimming
for genus ID.
|
Ground sac spider
(Castianeira longipalpa), Durham, NC, 7/7/08 |
Corinnid spider (Castianeira longipalpa), Hanging Rock State Park, Stokes
County, NC, 6/18/09 |
|
Red-spotted Ant Mimic Spider (Castianeira descripta)
 |
 |
|
|
|
|
|
|
Red-spotted Ant Mimic
(Castianeira
descripta),
Durham, NC, 11/20/07 |
Red-spotted Ant Mimic Spider,
Durham, NC, 5/18/08 |
|
|
|
|
|
Three-lined Ant Mimic Spider (Castianeira trilineata)
 |
 |
|
|
| Three-lined
Ant-mimic Spider (Castianeira trilineata), Durham, NC, 6/02/11.
The ID for this spider has been challenged, but no alternative
proposed. |
Three-lined Ant Mimic Spider,
Third Fork Creek Trail, Durham, NC, 11/19/12 |
|
|
Sac Spiders (Clubionidae family)
 |
 |
|
|
|
|
|
| Sac spider (Clubionidae
family). Note the spinnerets at the end of the abdomen.
Kyron thinks it might be a Clubiona genus member. |
Clubionid spider, Durham,
NC, 1/10/13 |
|
|
|
|
|
Jumping
Spiders
(Salticidae family, Dionycha, RTA Clade,
Entelegynae, Araneomorphae)
Some jumping spider behavior is illustrated on
William Butler's Facebook photos.
Salticidae Eye Arrangements (Schimming)
Jumping spiders seem to have excellent vision and quick
response times. One thing that's obvious is that they can make big moves,
such as 180° complete turnabouts, almost instantaneously, and don't need to have
a completely horizontal surface to do it, either! They pounce on prey rather than using webs to catch it.
Synemosyninae subfamily
 |
|
|
|
|
|
| Jumping spider (Synemosyna
formica), Durham, NC, 3/17/12 |
|
|
|
|
|
Lyssomaninae subfamily
Lyssomanes genus
See a
video of mating Magnolia Green Jumping Spiders. Read about
Hill, D.E. (2006) Observations on the physiology of Lyssomanes viridis.
 |
 |
|
Female
Magnolia Green
Jumping Spider (Lyssomanes
viridis, subfamily Lyssomaninae),
outdoor trail at the North Carolina Museum
of Art, Raleigh, Wake County, NC, 5/8/07 |
Male Magnolia Green Jumping Spider (Lyssomanes viridis),
which showed up on my hat at the Raulston Arboretum, Raleigh, Wake
County, NC, 5/22/09 |
Euophryinae subfamily
Anasaitis genus
 |
|
|
|
|
| Anasaitis canosa, Carolina
Beach, New Hanover County, NC, 6/25/08. ID thanks to Ryan
Kaldari; see associated
BugGuide page.
|
|
|
|
|
Dendryphantinae subfamily
Paraphidippus genus
 |
 |
|
|
|
|
|
| Jumping spider (Paraphidippus
aurantius), Mason Farm Biological Reserve, Orange County, NC,
4/28/07 |
Jumping spider
(Paraphidippus aurantius) |
|
|
|
|
|
Phidippus genus
Phidippus clarus
 |
 |
 |
|
|
|
|
| Jumping spider
(female Phidippus clarus), with prey. Flat River Impoundment,
Durham County, NC, 7/18/11 |
Jumping spider (male Phidippus clarus), Durham, NC, 6/15/08 |
Jumping spider (male Phidippus clarus) with prey, Durham, NC, 5/29/08 |
|
|
|
|
Phidippus whitmani
 |
|
|
|
|
|
|
Male jumping spider (Phidippus whitmani), at Abbott Lake, Peaks of Otter Recreational Area,
Bedford County, Virginia, 7/9/09 |
|
|
|
|
|
Phidippus otiosus
 |
 |
|
|
|
|
|
| Big jumping spider (Phidippus
otiosis) |
Another view of the big jumping
spider (Phidippus otiosus) |
|
|
|
|
|
Phidippus audax
 |
 |
 |
|
|
|
|
|
|
Daring Jumping Spider (Phidippus audax), displaying green chelicerae, Durham,
NC, 10/10/09 |
Daring Jumping Spider
(Phidippus audax), Durham,
NC, 4/16/06 |
Daring
Jumping Spider (Phidippus
audax), Boone, Watauga County, NC, 8/29/05 |
|
|
|
|
|
Phidippus mystaceous
 |
|
|
|
|
|
| Jumping
spider (Phidippus mystaceous), Occoneechee
Mountain, Orange County, NC, October 29, 2009 |
|
|
|
|
|
Phidippus princeps
 |
|
|
|
|
|
|
Jumping spider (Phidippus princeps), Penny's Bend Nature Preserve, Durham,
NC, 4/4/09. ID thanks to
Ryan Kaldari. |
|
|
|
|
|
Pelegrina genus
 |
|
|
|
|
|
| Peppered Jumper (Pelegrina
galathea), Durham, NC, 5/8/08 |
|
|
|
|
|
Hentzia genus
|
|
 |
 |
 |
 |
|
|
|
|
| Male Hentz
Longjawed Jumping Spider (Hentzia palmarum), Mason Farm Biological Reserve,
Orange County, NC, 5/21/09. Very uncertain about this ID.
|
Male Hentz
Longjawed Jumping Spider (Hentzia palmarum), Third Fork Trail,
Durham, NC, 9/25/11 |
Male Hentz
Longjawed Jumping Spider, Durham, NC, 9/15/11. Unusually pale, may
have molted recently. |
Young male Hentz Long-jawed
Jumping Spider (Hentzia palmarum) |
Female Hentz
Longjawed Jumping Spider (Hentzia palmarum),
Third Fork Trail, Durham, NC, 9/25/11 |
|
|
|
|
 |
 |
 |
 |
|
|
|
|
|
| Jumping
spider, Hentzia genus, Third Fork Creek Trail, Durham, NC,
4/5/13 |
Jumping spider (Hentzia
mitrata), Third Fork Creek Trail, Durham, NC, 1/13/13 |
Jumping spider
(Hentzia mitrata), about 5 mm long, Durham, NC, 10/27/11 |
Jumping spider (Hentzia mitrata), about 5 mm long. Durham, NC, 10/3/09.
ID thanks to Lyn Atherton. |
|
|
|
|
|
Tutelina genus
 |
|
|
|
|
| Jumping spider (Tutelina elegans), Durham,
NC,
6/11/09 |
|
|
|
|
Marpissinae subfamily
Platycryptus genus
 |
 |
 |
| Jumping spider
(Platycryptus undatus) |
Jumping spider (Platycryptus
undatus), Durham, NC, 8/14/07. This was a relatively large spider, at least
13 mm long and very lively. |
Jumping Spider
(Platycryptus undatus),Durham, NC, 7/13/06. It is missing its left
foreleg. |
Metacyrba genus
 |
|
|
|
|
|
| Jumping
spider (Metacyrba taeniola), Durham, NC, 6/20/05 |
|
|
|
|
|
Maevia genus
 |
|
|
|
|
|
|
Dimorphic Jumper
(Maevia inclemens), Eno River State Park, Old Cole Mill Road access,
Orange County, NC, 7/27/07 |
|
|
|
|
|
Pelleninae subfamily
 |
|
|
|
|
| Colorful Creek Bank
Spider (Habronattus decorus,
Pelleninae subfamily),
Mason Farm Biological Reserve, Orange County, NC, 4/14/06. About ⅛ inch
long. |
|
|
|
|
Thiodininae subfamily
 |
 |
|
|
| Young jumping spider, Eno River
SP, Old Cole Mill Road access, Orange County, NC, 8/17/05. Look at all those eyes! In the
picture on the right, the spider faced toward me, but maybe was looking
at me the whole time! According to Lyn Atherton, its genus is
Thiodina and its species most likely sylvana because it appeared in the
woods. |
|
|
Unidentified Jumping Spiders
 |
| Jumping spider with prey, Dare County,
NC, 10/5/05. |
Spider Exuviae
 |
 |
|
|
|
|
Spider exuvia, Durham, NC, 7/25/09 |
Spider exuvia.
You can see the red chelicerae ending in black fangs. Durham, NC,
6/14/08 |
|
|
|
Mystery Spiders: unknown or
uncertain/unconfirmable taxonomic classifications
From time to time spiders present ID problems and
photos are shown here. See if you can figure out what kinds of spiders
these are. If you know the answer,
contact us.
 |
 |
|
| Jumping spider with prey, possibly a
winged termite. Penny's Bend Nature Preserve, Durham County, NC,
4/20/07. |
Tiny spider, about the size of a springtail, Durham, NC, 8/18/10 |
|
 |
| Durham, NC, 7/28/05. This tiny spider
showed up at the swamp in my neighborhood. |
 |
| This looks like a marsh crab spider,
found on the shoulder of a road going over Lake Crabtree, Wake County,
NC, 10/13/05. Maybe an Araniella genus member? |
|
Generally speaking, spider taxonomy is based on
anatomical structure characteristics and nature of behavior, e.g.,
the movements a spider makes while constructing a web, with final web shape
a lesser consideration. Some spiders ambush and pounce on prey rather than
catching it in a web. This is based on the theoretical heredity pattern
on certain traits during the process of evolution. Nevertheless, certain
families have misleading common names, e.g., "orb weavers."
Copyright © 2005-2012 by Dorothy E. Pugh, except for photos by other photographers.
Gaddy, L.L. (2009) Spiders of the Carolinas. Duluth,
MN:Kollath+Stensaas.