Hornfaced mason bee
Hornfaced mason bee (Osmia cornifrons) emerging from cocoon. Female. Swarthmore, PA.
Downy yellowjacket
Downy yellowjacket (Vespula flavopilosa) on tree trunk. Crum Woods, Swarthmore, PA.
Honeysuckle sawfly larva
Honeysuckle sawfly (Abia sp.). Mohonk Mountain House, New Paltz, NY.
Oak pea gall wasp
Oak pea gall wasp (Acraspis pezomachoides) on white oak. Hildacy Preserve, Media, PA.
Larger empty oak apple gall wasp
Larger empty oak apple gall wasp (Amphibolips quercusinanis). Crow's Nest Preserve, Elverson, PA.
Larger apple oak gall wasp
Cross section of larger apple oak gall (Amphibolips quercusinanis). Collected from Quercus bicolor. Swarthmore, PA.
Ampulex canaliculata
Ampulex canaliculata. Ridley Creek State Park, Media, PA.
Ancistrocerus antilope
Ancistrocerus antilope building nest. Swarthmore, PA.
Andricus nigricens
Andricus nigricens gall on underside of swamp white oak (Quercus bicolor) leaves. Crum Woods, Swarthmore, PA.
Andricus quercusflocci gall
Andricus quercusflocci gall on upper side of white oak leaf. ID tentative. Approximately 6 mm in diameter. Hildacy Preserve, Media, PA.
Leafy oak gall
Leafy oak gall (Andricus quercusfoliatus) on Quercus gemminata. Highlands Hammock State Park, Sebring, FL.
Larva of leafy oak gall (Andricus quercusfoliatus) on Quercus gemminata. Highlands Hammock State Park, Sebring, FL.
Leafy oak gall wasp
Leafy oak gall (Andricus quercusfoliatus) on Quercus geminata. Highlands Hammock State Park, Sebring, FL.
Wool-bearing gall wasp
Wool-bearing gall wasp (Andricus quercuslanigera) on sand live oak. Archbold Research Station, Venus, Florida.
Anomalon sp.
Anomalon sp.. Zolfo Springs, FL.
Anomalon sp. Zolfo Springs, FL.
European wool carder bee
European wool carder bee (Anthidium manicatum). Mohonk Mountain House, New Paltz, NY.
Aphidius exit hole
Exit hole of Aphidius sp. Swarthmore, PA.
Aphidius
Aphidius sp. ID tentative. Swarthmore, PA.
Western honey bee
Western honey bee (Apis meliffera) visiting moist soil for water. Swarthmore, PA.
Western honey bee (Apis mellifera) foraging for water. Swarthmore, PA.
Western honey bee (Apis mellifera) on verbena. Mohonk Mountain House, New Paltz, NY.
Western honey bee (Apis mellifera) foraging on crocus. Swarthmore, PA.
Western honey bee (Apis mellifera) on eucalyptus flower. Griffith Park, Los Angeles, CA.
Western honey bee (Apis mellifera) nectaring on swamp milkweed. Saugerties, NY.
Poison-ivy sawfly
Poison-ivy sawfly (Arge humeralis). Hildacy Preserve, Media, PA.
Astata unicolor
Astata unicolor. Male. Stoneleigh Gardens, Villanova, PA.
Pure green Augochlora
Augochlora pura collecting pollen from corn. Stroud Preserve, Chester County, PA.
Augochlora pura on fabric. Springfield, PA.
Pure green sweat bee (Augochlora pura) in bindweed flower. Swarthmore, PA.
Pure green sweat bee (Augochlora pura) at a rotting log. Taylor Memorial Arboretum, Wallingford, PA.
Pure green Augochlora (Augochlora pura) on tomatillo flower. Swarthmore, PA.
Pure green Augochlora (Augochlora pura) on white snakeroot. Rose Tree Park, Media, PA.
Auplopus mellipes
Auplopus mellipes at bee/wasp hotel. Swarthmore, PA.
Two-spotted bumble bee
Two-spotted bumble bee (Bombus bimaculatus) on tree trunk. Swarthmore, PA.
Brown-belted bumble bee
Brown-belted bumble bee (Bombus griseocollis). Myakka River State Park, Florida.
Common eastern bumble bee
Common eastern bumble bee (Bombus impatiens). Mohonk Mountain House, New Paltz, NY.
Fuzzy-horned bumble bee
Fuzzy-horned bumble bee (Bombus mixtus) on yellow flower. Fairbanks, Alaska.
Perplexing bumble bee
Perplexing bumble bee (Bombus perplexus) collecting honeydew from giant aphids (Cinara sp.). Mohonk Mountain House, New Paltz, NY.
Caenochrysis sp.
Cuckoo wasp (Caenochrysis sp.) stalking a Trypoxylon collinum nest. Swarthmore, PA.
Caliroa heads on oak leaf
Heads of Caliroa sp. larvae. Little Crum Creek Park, Swarthmore, PA.
Caliroa sp.
Oak leaf skeletonized by Caliroa sp. Little Crum Creek Park, Swarthmore, PA.
Honeycomb leaf gall wasp
Honeycomb leaf gall wasp (Callirhytis favosa). Little Crum Creek Park, Swarthmore, PA.
