• Results for
    • Pennsylvania
  • (610)
Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA.  -  John Cancalosi
01640003
John Cancalosi / Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA.
Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.  -  John Cancalosi
01640000
John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.
Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.  -  John Cancalosi
01508163
John Cancalosi / Group of gravid female Timber rattlesnakes (Crotalus horridus) basking before giving birth, Pennsylvania, USA, July.
Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.  -  John Cancalosi
01495666
John Cancalosi / Female Timber rattlesnake (Crotalus horridus) at nest site with newborn young, Pennsylvania, USA, September.
American toad (Bufo americanus) crossing road at night in front of car headlights, Philadelphia, Pennsylvania, USA, March  -  Doug Wechsler
01318739
Doug Wechsler / American toad (Bufo americanus) crossing road at night in front of car headlights, Philadelphia, Pennsylvania, USA, March
Abstract apartment and office buildings, Philadelphia, Pennsylvania, USA  -  Michael Hutchinson
01254953
Michael Hutchinson / Abstract apartment and office buildings, Philadelphia, Pennsylvania, USA
American Toad {Bufo americanus} male calling, his vocal sac vibrations causing ripples in the water,  Pennsylvania, USA  -  Doug Wechsler
01213653
Doug Wechsler / American Toad {Bufo americanus} male calling, his vocal sac vibrations causing ripples in the water, Pennsylvania, USA
Timber rattlesnakes emerging from den {Crotalus horridus} Pennsylvania, USA  -  John Cancalosi
01112625
John Cancalosi / Timber rattlesnakes emerging from den {Crotalus horridus} Pennsylvania, USA
Bullfrog male in garden pond {Rana catesbeiana} Pennsylvania, USA.  -  Doug Wechsler
01071808
Doug Wechsler / Bullfrog male in garden pond {Rana catesbeiana} Pennsylvania, USA.
Bullfrog female by garden pond {Rana catesbeiana} Pennsylvania, USA  -  Doug Wechsler
01071804
Doug Wechsler / Bullfrog female by garden pond {Rana catesbeiana} Pennsylvania, USA
American alligator (A. mississippiensis) teeth. C. PY, USA. Pennsylvania  -  Niall Benvie
01023505
Niall Benvie / American alligator (A. mississippiensis) teeth. C. PY, USA. Pennsylvania
Fall leaf pattern close-up, eastern hardwood forest, Allegheny National Forest, Pennsylvania  -  Gerry Ellis
00203305
Gerry Ellis / Fall leaf pattern close-up, eastern hardwood forest, Allegheny National Forest, Pennsylvania
Fall leaf pattern close up, eastern hardwood forest, Allegheny National Forest, Pennsylvania  -  Gerry Ellis
00203304
Gerry Ellis / Fall leaf pattern close up, eastern hardwood forest, Allegheny National Forest, Pennsylvania
Dandelion (Taraxacum officinale) with bee covered with pollen, Pennsylvania  -  Tim Fitzharris
00171936
Tim Fitzharris / Dandelion (Taraxacum officinale) with bee covered with pollen, Pennsylvania
Amazon River Dolphin (Inia geoffrensis) melon on forehead used for sonar, Pittsburg Aquarium  -  Norbert Wu
00135634
Norbert Wu / Amazon River Dolphin (Inia geoffrensis) melon on forehead used for sonar, Pittsburg Aquarium
Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.  -  John Cancalosi
01671780
John Cancalosi / Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.
Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.  -  John Cancalosi
01671779
John Cancalosi / Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.
Timber rattlesnakes (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.  -  John Cancalosi
01671778
John Cancalosi / Timber rattlesnakes (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.
Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.  -  John Cancalosi
01671777
John Cancalosi / Timber rattlesnake (Crotalus horridus) female with newborn young, Pennsylvania, USA. September.
Lightning bugs / Fireflies, (Photuris sp.), annual mating display in meadow and along a stream, Pennsylvania, USA, June. Multiple exposure.  -  Mary McDonald
01666987
Mary McDonald / Lightning bugs / Fireflies, (Photuris sp.), annual mating display in meadow and along a stream, Pennsylvania, USA, June. Multiple exposure.
Young, Timber rattlesnake (Crotalus horridus) and adult, Pennsylvania, USA.  -  John Cancalosi
01661150
John Cancalosi / Young, Timber rattlesnake (Crotalus horridus) and adult, Pennsylvania, USA.
Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.  -  John Cancalosi
01661149
John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.
Young, Timber rattlesnake (Crotalus horridus) moving over coiled adult, Pennsylvania, USA.  -  John Cancalosi
01661148
John Cancalosi / Young, Timber rattlesnake (Crotalus horridus) moving over coiled adult, Pennsylvania, USA.
Timber rattlesnake (Crotalus horridus) unravelling, moving out of frame, leaving young behind at nest site, Pennsylvania, USA.  -  John Cancalosi
01661147
John Cancalosi / Timber rattlesnake (Crotalus horridus) unravelling, moving out of frame, leaving young behind at nest site, Pennsylvania, USA.
Timber rattlesnakes (Crotalus horridus) new-born young with adult, Pennsylvania, USA. September.  -  John Cancalosi
01651468
John Cancalosi / Timber rattlesnakes (Crotalus horridus) new-born young with adult, Pennsylvania, USA. September.
Silver-spotted skipper caterpillar (Epargyreus clarus) weaving shelter, Ford Washington State Park, Pennsylvania, USA. September.  -  Doug Wechsler
01649364
Doug Wechsler / Silver-spotted skipper caterpillar (Epargyreus clarus) weaving shelter, Ford Washington State Park, Pennsylvania, USA. September.
Blow fly (Lucilia) Wissahickon Valley Park, Pennsylvania, USA, September.  -  Doug Wechsler
01649353
Doug Wechsler / Blow fly (Lucilia) Wissahickon Valley Park, Pennsylvania, USA, September.
Bark centipede (Scolopocryptops sexspinosus) guarding eggs in rotten log, Pennsylvania.  -  Doug Wechsler
01649349
Doug Wechsler / Bark centipede (Scolopocryptops sexspinosus) guarding eggs in rotten log, Pennsylvania.
Ant-mimicking spider (Synemosyna formica) Morris Arboretum, Pennsylvania, USA. August.  -  Doug Wechsler
01649343
Doug Wechsler / Ant-mimicking spider (Synemosyna formica) Morris Arboretum, Pennsylvania, USA. August.
Anchor stink bug (Stiretrus anchorago) nymph, predator on leaf beetle larva, with adult Chrysomelid beetle. Pennsylvania, USA, August.  -  Doug Wechsler
01649341
Doug Wechsler / Anchor stink bug (Stiretrus anchorago) nymph, predator on leaf beetle larva, with adult Chrysomelid beetle. Pennsylvania, USA, August.
Flatbug (Neuroctenus) Camp Woods Preserve, Pennsylvania, USA, June.  -  Doug Wechsler
01649340
Doug Wechsler / Flatbug (Neuroctenus) Camp Woods Preserve, Pennsylvania, USA, June.
Anthomyiid fly; searching for egg laying site in hole. Fort Washington State Park, Pennsylvania, USA, September.  -  Doug Wechsler
01649337
Doug Wechsler / Anthomyiid fly; searching for egg laying site in hole. Fort Washington State Park, Pennsylvania, USA, September.
European woodlouse (Oniscus asellus) moulting in log, Pennsylvania, USA, August.  -  Doug Wechsler
01649336
Doug Wechsler / European woodlouse (Oniscus asellus) moulting in log, Pennsylvania, USA, August.
Eastern tiger swallowtail (Papilio glaucus) and Peck's skipper butterfly (Polites peckius) on swamp milkweed (Asclepias incarnata) French Creek State Park, Pennsylvania, USA. July.  -  Doug Wechsler
01649334
Doug Wechsler / Eastern tiger swallowtail (Papilio glaucus) and Peck's skipper butterfly (Polites peckius) on swamp milkweed (Asclepias incarnata) French Creek State Park, Pennsylvania, USA. July.
Eastern subterranean termite (Reticulitermes flavipes) Fort Washington State Park, Pennsylvania, USA, July.  -  Doug Wechsler
01649333
Doug Wechsler / Eastern subterranean termite (Reticulitermes flavipes) Fort Washington State Park, Pennsylvania, USA, July.
Dictyopharid planthopper (Rhynchomitra microrhina) Pennsylvania, USA, August.  -  Doug Wechsler
01649330
Doug Wechsler / Dictyopharid planthopper (Rhynchomitra microrhina) Pennsylvania, USA, August.
Fly (Heteromeringia nitida) ready to defend itself against Druid fly (Clusia lateralis) Fort Washington State Park, Pennsylvania, USA. August.  -  Doug Wechsler
01649320
Doug Wechsler / Fly (Heteromeringia nitida) ready to defend itself against Druid fly (Clusia lateralis) Fort Washington State Park, Pennsylvania, USA. August.
Cixiid planthopper (Cixiidae) beneath log, Fort Washington State Park, Pennsylvania, USA, June.  -  Doug Wechsler
01649319
Doug Wechsler / Cixiid planthopper (Cixiidae) beneath log, Fort Washington State Park, Pennsylvania, USA, June.
Cixiid planthopper (Cixiidae) beneath log, Fort Washington State Park, Pennsylvania, USA, June.  -  Doug Wechsler
01649318
Doug Wechsler / Cixiid planthopper (Cixiidae) beneath log, Fort Washington State Park, Pennsylvania, USA, June.
Citrus flatid planthopper (Metcalfa pruinosa) Morris Arboretum, Philadelphia, Pennsylvania, USA. August.  -  Doug Wechsler
01649317
Doug Wechsler / Citrus flatid planthopper (Metcalfa pruinosa) Morris Arboretum, Philadelphia, Pennsylvania, USA. August.
Citrus flatid nymph (Metcalfa pruinosa) Crossways Preserve, Pennsylvania, USA, July.  -  Doug Wechsler
01649316
Doug Wechsler / Citrus flatid nymph (Metcalfa pruinosa) Crossways Preserve, Pennsylvania, USA, July.
Chinese praying mantis (Tenodera sinenesis) close up of ootheca (egg case) Philadelphia, Pennsylvania, USA, APril.  -  Doug Wechsler
01649314
Doug Wechsler / Chinese praying mantis (Tenodera sinenesis) close up of ootheca (egg case) Philadelphia, Pennsylvania, USA, APril.
Ferruginous carpenter ant nest (Camponotus chromaiodes) new nest beneath bark; Pennsylvania, USA, July.  -  Doug Wechsler
01649313
Doug Wechsler / Ferruginous carpenter ant nest (Camponotus chromaiodes) new nest beneath bark; Pennsylvania, USA, July.
Common buckeye butterfly (Junonia coenia) French Creek State Park, Pennsylvania, USA, July.  -  Doug Wechsler
01649310
Doug Wechsler / Common buckeye butterfly (Junonia coenia) French Creek State Park, Pennsylvania, USA, July.
Brown lacewing larva (Hemerobiidae), Fort Washington State Park, Pennsylvania, USA, June.  -  Doug Wechsler
01649308
Doug Wechsler / Brown lacewing larva (Hemerobiidae), Fort Washington State Park, Pennsylvania, USA, June.
Milkweed tussock moth (Euchaetes egle) caterpillars on milkweed leaf, Wissahickon Valley Park, Pennsylvania, USA, July.  -  Doug Wechsler
01649299
Doug Wechsler / Milkweed tussock moth (Euchaetes egle) caterpillars on milkweed leaf, Wissahickon Valley Park, Pennsylvania, USA, July.
Linden lace bug (Gargaphia tiliae) with eggs, Morris Arboretum, Pennsylvania, USA. August.  -  Doug Wechsler
01649296
Doug Wechsler / Linden lace bug (Gargaphia tiliae) with eggs, Morris Arboretum, Pennsylvania, USA. August.
Least skipper butterfly (Ancyloxypha numitor) pair copulating, Morris Arboretum, Pennsylvania, USA, August.  -  Doug Wechsler
01649295
Doug Wechsler / Least skipper butterfly (Ancyloxypha numitor) pair copulating, Morris Arboretum, Pennsylvania, USA, August.
Next page