Spiders

Snetsinger's purseweb spider
Snetsinger’s purseweb spider (Atypus snetsingeri). Saul Wildlife Preserve, Rose Valley, PA.
Theridion frondeum (eastern long-legged cobweaver) on a leaf. Palps not dissected so there’s a remote chance this could be the much rarer Theridion albidum.
Grass spider
Grass spider (Agelenopsis sp.) eating another spider. Swarthmore, PA.
Grass spider (Agelenopsis sp.)
Grass spider (Agelenopsis pennsylvanica). ID tentative. Mohonk Mountain House, New Paltz, NY.
Spider on birch tree
Funnel weaver (Agelenopsis sp.). ID tenative. Swarthmore, PA.
Ariadna bicolor web
Ariadna bicolor tunnel. ID not confirmed. Mohonk Mountain House, New Paltz, NY.
Anaptomecus longiventris
Anaptomecus longiventris. San Carlos, Alajuela, Costa Rica.
Anyphaena pectorosa
Anyphaena pectorosa on snow. ID tentative. Hildacy Preserve, Media, PA.
Ghost spider in retreat
Ghost spider (Anyphaena sp.) in retreat next to cynipid gall. Hildacy Preserve, Media, PA.
Marbled orbweaver (Araneus marmoreus)
Marbled orbweaver (Araneus marmoreus). Maurice Bower Saul Wildlife Sanctuary, Rose Valley, PA.
Marbled orbweaver (Araneus marmoreus)
Marbled orbweaver (Araneus marmoreus). Maurice Bower Saul Wildlife Sanctuary, Rose Valley, PA.
Marbled orbweaver (Araneus marmoreus)
Marbled orbweaver (Araneus marmoreus). John Heinz National Wildlife Refuge, Philadelphia, PA.
Lattice orbweaver (Araneus thaddeus) in retreat
Lattice orbweaver (Araneus thaddeus) in retreat. Swarthmore, PA.
Hawaiian garden spider (Argiope appensa) courtship
Hawaiian garden spider (Argiope appensa) courtship. Kailua-Kona, Hawai’i.
Hawaiian garden spider (Argiope appensa) courtship
Hawaiian garden spider (Argiope appensa) courtship. Kailua-Kona, Hawai’i.
Hawaiian garden spider (Argiope appensa) courtship
Hawaiian garden spider (Argiope appensa) courtship. Kailua-Kona, Hawai’i.
Hawaiian garden spider (Argiope appensa) courtship
Hawaiian garden spider (Argiope appensa) courtship. Kailua-Kona, Hawai’i.
Juvenile black-and-yellow Argiope ( Argiope aurantia) on stabilimentum
Juvenile black-and-yellow Argiope ( Argiope aurantia) on stabilimentum. Paines Creek Historic Park, Bowling Green, Florida.
Juvenile black-and-yellow Argiope ( Argiope aurantia)
Juvenile black-and-yellow Argiope ( Argiope aurantia). Paines Creek Historic Park, Bowling Green, Florida.
Juvenile black-and-yellow Argiope ( Argiope aurantia) on stabilimentum
Juvenile black-and-yellow Argiope ( Argiope aurantia). Paines Creek Historic Park, Bowling Green, Florida.
Yellow garden spider
Yellow garden spider (Argiope aurantia) on stabilimentum. Rushton Woods Preserve, Willistown, PA.
Florida garden spider
Florida garden spider (Argiope florida) in web. Highlands Hammock State Park, Sebring, FL.
Argiope submaronica on stabilimentum
Argiope submaronica on stabilimentum. Formerly Argiope savignyi. La Selva, Costa Rica.
Hildacy Farm Preserve, Media, PA.
Snetsinger's purseweb spider
Two webs of Snetsinger’s purseweb spider (Atypus snetsingeri). Hildacy Preserve, Media, PA.
Snetsinger's purseweb spider (Atypus snetsingeri)
Tube of Snetsinger’s purseweb spider (Atypus snetsingeri).
Snetsinger's purseweb spider
Snetsinger’s purseweb spider (Atypus snetsingeri). Hildacy Preserve, Media, PA.
Snetsinger's purseweb spider
Snetsinger’s purseweb spider (Atypus snetsingeri). Saul Wildlife Preserve, Rose Valley, PA.
Ant-mimic sac spider
Ant-mimic sac spider. Either Castianeira floridiana or C. descripta. Highlands Hammock State Park, Sebring, FL.
Ant-mimic sac spider
Ant-mimic sac spider. Either Castianeira floridana or C. descripta. Highlands Hammock State Park, Sebring, FL.
Jumping spider (Colonus sp.) with fly
Jumping spider (Colonus sp.) with fly. Swarthmore, PA.
Dipogon sayi carrying a crab spider
Dipogon sayi carrying a crab spider (possibly Misumessus oblongus). Ridley Creek State Park, Edgmont, PA USA.
Dark fishing spider (Dolomedes tenebrosus)
Dark fishing spider (Dolomedes tenebrosus). John Heinz National Wildlife Refuge, Philadelphia, PA.
Dark fishing spider
Dark fishing spider (Dolomodes tenebrosus) on log. John Heinz National Wildlife Refuge. Philadelphia, PA.
Dark fishing spider
Dark fishing spider (Dolomedes tenebrosus) on leaf. ID tentative. John Heinz National Wildlife Refuge, Philadelphia, PA.
Dark fishing spider with regrown leg
Dark fishing spider (Dolomedes tenebrosus) with regrown R-II leg. Mohonk Mountain House, New Paltz, NY.
Dark fishing spider with regrown leg
Dark fishing spider (Dolomedes tenebrosus) with regrown R-II leg. Mohonk Mountain House, New Paltz, NY.
Dark fishing spider
Dark fishing spider (Dolomedes tenebrosus) in tree hole. ID tentative. John Heinz National Wildlife Refuge, Philadelphia, PA.
Dark fishing spider (Dolomedes tenebrosus)
Dark fishing spider (Dolomedes tenebrosus). John Heinz National Wildlife Refuge, Philadelphia, PA.
Six-spotted fishing spider (Dolomedes triton) in vernal pond
Six-spotted fishing spider (Dolomedes triton) in vernal pond. Hildacy Preserve, Media, PA.
Banded fishing spider
Banded fishing spider (Dolomedes vittatus) on bench near stream. ID tentative. Hedgerow Theater, Rose Valley, PA.
Banded fishing spider (Dolomedes vittatus)
Banded fishing spider (Dolomedes vittatus). Ridley Creek State Park, Edgemont, PA.
Dark fishing spider
Dark fishing spider (Dolomedes tenebrosus) on tree. ID tentative. Saul Wildlife Sanctuary, Rose Valley, PA.
Eris floridana
Eris floridana. Zolfo Springs, FL.
Eris floridina
Spiderlings of Eris floridana inside nest made of pine needles. Zolfo Springs, FL.
Eris floridana
Juvenile Eris floridana. Found on pine tree. Zolfo Springs, FL.
Eris floridana
Eris floridana. Zolfo Springs, FL.
Eris floridina
Spiderlings of Eris floridana inside nest made of pine needles. Zolfo Springs, FL.
Small jumping spider with large fly
Eris (likely E. militaris) with a Pollenia sp. Rose Tree Park, Media, PA.
Riparian duncecap orbweaver
Riparian duncecap orbweaver (Eustala cepina). ID tentative. Taylor Memorial Arboretum, Wallingford, PA.
Black-tailed red sheetweever
Black-tailed red sheetweb spider (Florinda coccinea). Zolfo Springs, FL.
Black-tailed red sheetweb spider
Black-tailed red sheetweb spider (Florinda coccinea). Zolfo Springs, FL.
Common Hentz jumper
Common Hentz jumper (Hentzia palmarum) guarding her eggs. Zolfo Springs, FL.
Common Hentz jumper
Common Hetnz jumper (Hentzia palmarum) guarding eggs. Zolfo Springs, FL.
Common Hentz jumper (Hentzia palmarum) with eggs
Common Hentz jumper (Hentzia palmarum) guarding her eggs. Zolfo Springs, FL.
Common Hentz jumper (Hentzia palmarum) with eggs
Zolfo Springs, FL.
Common Hentz jumper (Hentzia palmarum)
Common Hentz jumper (Hentzia palmarum) on citrus leaf. Male. Zolfo Springs, FL.
Hibana gracilis (garden ghost spider) inside silk retreat
Garden ghost spider (Hibana gracilis) inside silk retreat. Leiper Park, Wallingford, PA.
Hibana gracilis (garden ghost spider) inside silk retreat
Garden ghost spider (Hibana gracilis) inside silk retreat. Leiper Park, Wallingford, PA.
Hibana gracilis (garden ghost spider) inside silk retreat
Garden ghost spider (Hibana gracilis) inside silk retreat. Leiper Park, Wallingford, PA.
Western black widow (Latrodectus hesperus)
Western black widow (Latrodectus hesperus). Crooked River National Grassland. Madras, Oregon.
Mabel orchard orbweaver
Mabel orchard orbweaver (Leucauge argyrobapta). Zolfo Springs, FL.
Orchard orbweaver
Leucauge venusta (orchard orbweaver). Hildacy Preserve, Media, PA.
Leucauge venusta (orchard orbweaver)
Leucauge venusta (orchard orbweaver). Male. Glen Providence Park, Media, PA.
Orchard orbweaver
Orchard orbweaver (Leucauge venusta) on web. Tyler Arboretum, Media, PA.
Mangora gibberosa (lined orbweaver)
Lined orbweaver (Mangora gibberosa). Clayton Park, Upper Freehold, NJ.
Mecaphesa
Mecaphesa sp. Archbold Research Station, Venus, FL.
Mecaphesa californica
Mecaphesa californica. Eaton Canyon, LA.
Mecaphesa asperata (northern crab spider)
Mecaphesa asperata (northern crab spider). ID is tentative. Mt Cuba Center, DE.
Crab spider (Mecaphesa sp.) lurking in flowers
Crab spider (Mecaphesa sp.) lurking in flowers. Mohonk Mountain House, New Paltz, NY.
Mecaphesa sp.
A female Mecaphesa sp. inside the curved labellum of a canna lily (Canna indica). Zolfo Springs, FL.
Basilica orbweaver
Basilica orbweaver (Mecynogea lemniscata) with egg cases. Highlands Hammock State Park, Sebring, FL.
Gray wall jumper (Menemerus bivittatus) paralyzed by its prey, a longjawed orbweaver
Gray wall jumper (Menemerus bivittatus) paralyzed by its prey, a longjawed orbweaver. Zolfo Springs, FL.
Metazygia sp.
Metazygia sp. Zolfo Springs, FL.
Metazygia sp.
Metazygia sp. Zolfo Springs, FL.
Metepeira sp.
Metepeira sp. ID tentative. Madras, Oregon.
Flower crab spider (Misumena sp.) on hydrangea
Flower crab spider (Misumena sp.) on hydrangea. ID tentative. Mohonk Mountain House, New Paltz, NY.
American green crab spider
American green crab spider (Misumessus oblongus). Swarthmore, PA.
Western spotted orbweaver (Neoscona oaxacensis)
Western spotted orbweaver (Neoscona oaxacensis). In the Galápagos this spider is often called (incorrectly) Neoscona cooksoni. The insect caught in the web is probably a yellow paper wasp (Polistes versicolor). Isla Santiago, Galapagos.
Striped lynx (Oxyopes salticus) on lava
Striped lynx (Oxyopes salticus). Kailua-Kona, Hawai’i.
Oxyopes salticus (striped lynx) on lava
Striped lynx (Oxyopes salticus). Kailua-Kona, Hawai’i.
Striped lynx
Striped lynx (Oxyopes salticus). Kailua-Kona, Hawai’i.
Golden jumping spider
Golden jumping spider (Paraphidippus aurantius). Stoneleigh Garden, Villanova, PA.
Golden jumping spider (Paraphidippus aurantius)
Golden jumping spider (Paraphidippus aurantius). Hildacy Farm Preserve, Media, PA USA.
Golden jumping spider (Paraphidippus aurantius)
Golden jumping spider (Paraphidippus aurantius). Hildacy Farm Preserve, Media, PA USA.
Golden jumping spider (Paraphidippus aurantius)
Golden jumping spider (Paraphidippus aurantius). Hildacy Farm Preserve, Media, PA USA.
Peppered jumping spider
Peppered jumping spider (Pelegrina galathea) eating a golden-backed snipe fly. Crow’s Nest Preserve, Elverson, PA.
Daring jumping spider (Phidippus audax)
Daring jumping spider (Phidippus audax). Leiper Park, Wallingford, PA.
Paraphidippus princeps (grayish jumping spider) with an ant
Paraphidippus princeps (grayish jumping spider)) eating an ant. Hildacy Preserve, Media, PA.
Philodromus barrowsi
Philodromus barrowsi on Spanish moss. Pioneer Park, Zolfo Springs, FL.
Philodromus barrowsi
Philodromus barrowsi on Spanish moss. Zolfo Springs, FL.
Philodromus barrowsi on Spanish moss
Philodromus barrowsi on Spanish moss. Zolfo Springs, FL.
Philodromus barrowsi
Philodromus barrowsi on Spanish moss. Zolfo Springs, FL.
Philodromus barrowsi
Philodromus barrowsi on Spanish moss. Zolfo Springs, FL.
Nursery web spider (Pisaurina mira)
Nursery web spider (Pisaurina mira). Hildacy Farm Preserve, Natural Lands Trust, Media, PA USA.
American nursery web spider )Pisaurina mira) on grass
American nursery web spider )Pisaurina mira) on grass. Hildacy Preserve, Media, PA.
American nursery web spider
American nursery web spider (Pisaurina mira). Hildacy Preserve, Media, PA.
American nursery web spider (Pisaurina mira)
American nursery web spider (Pisaurina mira). Ridley Creek State Park, Media, PA.
American nursey web spider
Newly hatched American nursey web spider (Pisaurina mira). Swarthmore, Pennsylvania.
American nursey web spider
Newly hatched American nursey web spider (Pisaurina mira). Swarthmore, Pennsylvania.
American nursey web spider
Ventral view of a newly hatched American nursey web spider (Pisaurina mira). Swarthmore, Pennsylvania.
Nursery web spiders (Pisaurina mira)
Nursery web spiders (Pisaurina mira). Hildacy Farm Preserve, Media, PA USA.
Sclerosomatid harvestman on a palm trunk
Sclerosomatid (Prionostemma) harvestman on a palm trunk. La Selva, Costa Rica.
Jumping sider egg case on yarrow
Jumping sider egg case on yarrow. ID tentative. Crooked River National Grassland, Madras, OR.
Spider web with rime frost
Spider web with rime frost. Mohonk Mountain House, New Paltz, NY.
Long-jawed orbweaver guarding egg case
Long-jawed orbweaver (Tetragnatha sp.) guarding egg case. Zolfo Springs, FL.
Long-jawed orbweaver
Long-jawed orbweaver (Tetragnatha sp.). Zolfo Springs, FL.
Tetragnatha sp. in snow
Long-jawed orbweaver (Tetragnatha sp.) in snow. Hildacy Preserve, Media, PA.
Long-jawed orbweaver
Tetragnatha sp. guarding egg sac. Pioneer Park, Zolfo Springs, FL.
Eastern long-legged cobweaver
Eastern long-legged cobweaver (Theridion frondeum) in leaf retreat. Swarthmore, PA.
Theridion frondeum (eastern long-legged cobweaver) on a leaf
Theridion frondeum (eastern long-legged cobweaver) on a leaf. Palps not dissected so there’s a remote chance this could be the much rarer Theridion albidum.
Eastern long-legged cobweaver
Eastern long-legged cobweaver (Theridion frondeum) inside retreat. Swarthmore, PA.
Crab spider on aster
Crab spider (Thomisidae) on aster. Elverson, PA.
Broad-faced sac spider
Broad-faced sac spider (Trachelas tranquillus). Swarthmore, PA.
Golden silk orbweaver (Trichonephila clavipes)
Golden silk orbweaver (Trichonephila clavipes). Vaca Key, Florida.
Golden silk orbweaver
Golden silk orbweaver (Trichonephila clavipes). Vaca Key, Florida.
Golden silk orbweaver (Trichonephila clavipes)
Golden silk orbweaver (Trichonephila clavipes). Vaca Key, Florida.
Golden silk spider weaver (Trichonephila clavipes)
Golden silk spider weaver (Trichonephila clavipes). Formerly known as Nephila clavipes. La Selva, Costa Rica.
Ground crab spider (Xysticus sp.)
Ground crab spider (Xysticus sp.). John Heinz National Wildlife Refuge, Philadelphia, PA.
Ground crab spider (Xysticus sp.)
Ground crab spider (Xysticus sp.). Hildacy Preserve, Media, PA.
Common Hentz jumper
Common Hentz jumper (Hentzia palmarum) in retreat. Female. Eggs are front left. Zolfo Springs, FL.
Spider on log
Wolf spider. Archbold Research Station, Venus, FL.