Bees and wasps

Smaller yellow ant
Smaller yellow ant (Lasius claviger) on snow. Queen. Hildacy Preserve, Media, PA.
Aphidius
Aphidius sp. ID tentative. Swarthmore, PA.
Downy yellowjacket
Downy yellowjacket (Vespula flavopilosa) on tree trunk. Crum Woods, Swarthmore, PA.
Oak pea gall wasp
Oak pea gall wasp (Acraspis pezomachoides) on white oak. Hildacy Preserve, Media, PA.
Oak pea gall wasp
Oak pea gall wasp (Acraspis pezomachoides) on white oak. Hildacy Preserve, Media, PA.
Larger apple oak gall wasp
Cross section of larger apple oak gall (Amphibolips quercusinanis). Collected from Quercus bicolor. Swarthmore, PA.
Larger empty oak apple gall wasp
Larger empty oak apple gall wasp (Amphibolips quercusinanis). Crow’s Nest Preserve, Elverson, PA.
Ampulex canaliculata
Ampulex canaliculata. Ridley Creek State Park, Media, PA.
Ancistrocerus antilope
Ancistrocerus antilope building nest. 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.
Leafy oak gall
Leafy oak gall (Andricus quercusfoliatus) on Quercus gemminata. Highlands Hammock State Park, Sebring, FL.
Leafy oak gall
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 gemminata. 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.
Anomalon sp.. Zolfo Springs, FL.
European wool carder bee
European wool carder bee (Anthidium manicatum). Mohonk Mountain House, New Paltz, NY.
Dialictus sp.
Dialictus sp. on tomato flower. Swarthmore, PA.
Aphidius exit hole
Exit hole of Aphidius sp. Swarthmore, PA.
Western honey bee
Western honey bee (Apis meliffera) visiting moist soil for water. Swarthmore, PA.
Western honey bee
Western honey bee (Apis mellifera) on verbena. Mohonk Mountain House, New Paltz, NY.
Western honey bee
Western honey bee (Apis mellifera) foraging on crocus. Swarthmore, PA.
Western honey bee
Western honey bee (Apis mellifera) on eucalyptus flower. Griffith Park, Los Angeles, CA.
Western honey bee
Western honey bee (Apis mellifera) nectaring on swamp milkweed. Saugerties, NY.
Western honey bee
Western honey bee (Apis mellifera) foraging for water. Swarthmore, PA.
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 on fabric. Springfield, PA.
Pure green Augochlora
Pure green sweat bee (Augochlora pura) in bindweed flower. Swarthmore, PA.
Pure green Augochlora
Augochlora pura collecting pollen from corn. Stroud Preserve, Chester County, PA.
Pure green Augochlora
Augochlora pura collecting pollen from corn. Stroud Preserve, Chester County, PA.
Pure green Augochlora
Pure green sweat bee (Augochlora pura) at a rotting log. Taylor Memorial Arboretum, Wallingford, PA.
Pure green Augochlora
Pure green Augochlora (Augochlora pura) on tomatillo flower. Swarthmore, PA.
Pure green Augochlora
Pure green Augochlora (Augochlora pura) on white snakeroot. Rose Tree Park, Media, PA.
Pure green Augochlora
Augochlora pura collecting pollen from corn. Stroud Preserve, Chester County, PA.
Auplopus mellipes
Auplopus mellipes at bee/wasp hotel. Swarthmore, PA.
Brown-belted bumble bee
Brown-belted bumble bee (Bombus griseocollis). Myakka River State Park, Florida.
Bumblebee collecting aphid honeydew
Bumblebee (Bombus sp.) collecting aphid honeydew on a spruce tree. Mohonk Mountain House, New Paltz, NY.
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.
Caenochrysis sp.
Cuckoo wasp (Caenochrysis sp.) stalking a Trypoxylon collinum nest. Swarthmore, PA.
Caenochrysis sp.
Cuckoo wasp (Caenochrysis sp.) stalking a Trypoxylon collinum nest. Swarthmore, PA.
Furry oak leaf gall wasp
Furry oak leaf gall wasp (Callirhytis furva). Jessup, PA.
Southern live oak stem gall wasp
Southern live oak stem gall wasp (Callirhytis quercusbatatoides). Highlands Hammock State Park. Sebring, FL.
Southern live oak stem gall wasp
Southern live oak stem gall wasp (Callirhytis quercusbatatoides). Highlands Hammock State Park. Sebring, FL.
Wooly catkin gall wasp
Wooly catkin gall wasp (Callirhytis quercusoperator). Mohonk Mountain House, New Paltz, NY.
Zapatella quercusphellos
Zapatella quercusphellos on bear oak (Quercus ilicifolia). Formerly named Callirhytis quercussimilis, among many others. Mohonk Mountain House, New Paltz, NY.
Chelonus
Chelonus sp. Zolfo Springs, FL.
Chelostoma philadelphi in flight
Chelostoma philadelphi in flight. Swarthmore, PA.
Chelostoma philadelphi with pollen load
Chelostoma philadelphi with pollen load. Swarthmore, PA.
Chelostoma philadelphi covered with pollen
Chelostoma philadelphi. Swarthmore, PA.
Chelostoma philadelphi
Chelostoma philadelphi trying to evict a club-horned cuckoo wasp (Sapyga louisi) from nest. Swarthmore, PA.
Chelostoma philadelphi
Chelostoma philadelphi. Swarthmore, PA.
Cuckoo wasp
Cucko wasp (Chrysis sp.) at bee/wasp hotel. Swarthmore, PA.
Cuckoo wasp
Cucko wasp (Chrysis sp.) at bee/wasp hotel. Swarthmore, PA.
Bristly rose sawfly
Bristly rose sawfly (Cladius pectinicornis). Swarthmore, PA.
Coelichneumon navus
Coelichneumon navus on fungus. Ridley Creek State Park, Media, PA.
Coelichneumon vitalis
Coelichneumon vitalis on forest floor. Mohonk Mountain House, New Paltz, NY.
Unequal cellophane bee
Unequal cellophane bee (Colletes inaequalis) foraging on eastern redbud.
Unequal cellophane bee
Unequal cellophane bee (Colletes inaequalis) foraging on eastern redbud.
Rufous-backed cellophane bee
Rufous-backed cellophane bee (Colletes thoracicus). Swarthmore, PA.
Conura sp.
Conura sp. on tomato leaf. Zolfo Springs, FL.
Conura sp.
Conura sp. on tomato leaf. Zolfo Springs, FL.
Hornworm parasitoid wasp
Hornworm parasitoid wasp (Cotesia congregata) on tobacco hornworm (Manduca sexta). Swarthmore, PA.
Cabbage white parasitoid wasp
Cocoons of the white butterfly parasite (Cotesia glomerata). John Heinz National Wildlife Refuge, Philadelphia, PA.
Cryptinid
Cryptinae. Guanacaste province, Costa Rica.
Cryptinid
Unidentified wasp in Cryptinae. Swarthmore, PA.
Cynipid
Cynipidae (asexual morph). Subapterous. Hildacy Preserve, PA.
Blackberry knot gall wasp
Blackberry root gall wasp (Diastrophus nebulosus). Rushton Woods Preserve. Willistown, PA.
Blackberry knot gall wasp larva
Blackberry knot gall wasp (Diastrophus nebulosus) larva. Rushton Woods Preserve, Willistown, PA.
Blackberry knot gall wasp larvae
Blackberry knot gall wasp (Diastrophus nebulosus) larvae. Rushton Woods Preserve, Willistown, PA.
Blackberry knot gall wasp
Blackberry root gall wasp (Diastrophus nebulosus). Longwood Gardens, Kennett Square, PA.
Digonogastra sp.
Digonogastra sp. Near bee hotel. Swarthmore, PA.
Dipogon sayi
Dipogon sayi with crab spider (possibly Misumessus oblongus). Ridley Creek State Park, Edgmont, PA USA.
Disholcaspis quercusvirens
Disholcaspis quercusvirens on live oak. Highlands Hammock State Park, Sebring, FL.
Baldfaced hornet
Baldfaced hornet (Dolichovespula maculata). Swarthmore, PA.
Bald-faced hornet
Bald-faced hornet (Dolichovespula maculata). Overwintering queen. Swarthmore, PA.
Baldfaced hornet
Baldfaced hornet (Dolichovespula maculata). Swarthmore, PA.
Baldfaced hornet
Baldfaced hornet (Dolichovespula maculata). Swarthmore, PA.
Baldfaced hornets
Baldfaced hornets (Dolichovespula maculata) imbibing sap from the base of a tree. Rose Tree Park, Media, PA.
Ectatomma
Ants (Ectatomma) on leaf. Guanacaste Province, Costa Rica.
Ectemnius in nest
Ectemnius sp. on pine tree. Taylor Memorial Arboretum, Wallingford, PA.
Ectemnius
Ectemnius sp. on pine tree. Taylor Memorial Arboretum, Wallingford, PA.
Ephialtini
Ephialtini. Ridley Creek State Park, Edgemont, PA.
Eremnophila aureonotata
Eremnophila aureonotata. Stroud Preserve, West Chester, PA.
Cross potter wasp
Cross potter wasp (Eumenes crucifera). ID tentative. Crooked River National Grassland, Madras, OR.
Fraternal potter wasp
Fraternal potter wasp (Eumenes fraternus) collecing mud for nest. Female. Newfoundland, PA.
Eumenes nest
Eumenes sp. Myakka River State Park, Florida.
Potter wasp nests
Nests of potter or mason wasp (Eumeninae) on underside of rock. Unionville serpentine barren, Unionville, PA.
Euodynerus megaera
Euodynerus megaera scraping material off a leaf. Female. Very similar in appearance to Euodynerus schwarzi. Swarthmore, PA.
Euodynerus schwarzi
Euodynerus schwarzi applying mud cap to brood tunnel. Swarthmore, PA.
Euodynerus schwarzi
Euodynerus schwarzi applying mud cap to brood tunnel. Swarthmore, PA.
Euodynerus sp.
Euodynerus (Species F). Details at https://cjai.biologicalsurvey.ca/bmc_05/35e_spf.html. Swarthmore, PA.
Euodynerus megaera
Euodynerus megaera at bee/wasp hotel. Swarthmore, PA.
Chelonus
Chelonus sp. Zolfo Springs, FL.
Formica sp.
Ant (Formica sp.) eating a dead shrew. Swarthmore, PA.
Ligated furrow bee
Ligated furrow bee (Halictus ligatus). Male. Crooked River National Grassland, Madras, Oregon.
Brown-legged grass-carrying wasp
Brown-legged grass-carrying wasp (Isodontia auripes) at bee/wasp hotel. Swarthmore, PA.
Brown-legged grass-carrying wasp
Isodontia auripes (brown-legged grass-carrying wasp). Swarthmore, PA.
Grass-carrying wasp nest
Hole plug of a grass-carrying wasp (Isodontia sp.) at a mason bee house. Longwood Gardens, Kennett Square, PA.
Lasioglossum sp.
Sweat bee (Lasioglossum sp.) drinking sweat. Swarthmore, PA.
Lasioglossum sp.
Sweat bee (Lasioglossum sp.) on yarrow. Tyler Arboretum, Media, PA.
Smaller yellow ant
Smaller yellow ant (Lasius claviger) queen on snow. Hildacy Preserve, Media, PA.
Lasius claviger (smaller yellow ant) queen on snow
With, I think, phoretic Astigmatid mites (perhaps Histiostoma). Media, PA.
Smaller yellow ant
Smaller yellow ant (Lasius claviger) on snow. Queen. Hildacy Preserve, Media, PA.
Lestica
Lestica sp. excavating a nest in pine tree bark. Taylor Memorial Arboretum, Wallingford, PA.
Leucospis affinis
Leucospis affinis at bee hotel. Swarthmore, PA.
Litomegachile
Litomegachile sp. on swamp milkweed. Swarthmore, PA.
Macrophya formosa
Macrophya formosa. Hildacy Preserve, Media, PA.
Sawfly larva
Sawfly larva (Macrophya sp.) on elderberry. Mohonk Mountain House, New Paltz, NY.
White-footed leafcutter bee
White-footed leafcutter bee (Megachile albitarsis) cutting a leaf. Zolfo Springs, FL.
White-footed leafcutter bee
White-footed leafcutter bee (Megachile albitarsis) with a leaf section. Zolfo Springs, FL.
White-footed leafcutter bee
White-footed leafcutter bee (Megachile albitarsis) cutting a leaf disc out of air potato (Dioscorea bulbifera). Zolfo Springs, FL.
White-footed leafcutter bee
White-footed leafcutter bee (Megachile albitarsis) cutting a leaf. Zolfo Springs, FL.
White-footed leafcutter bee
White-footed leafcutter bee (Megachile albitarsis) resting with cut leaf. Zolfo Springs, FL.
Giant resin bee nest
Giant resin bee (Megachile sculpturalis) at bee hotel. Swarthmore, PA.
Giant resin bee nest
Giant resin bee (Megachile sculpturalis) at bee hotel. Swarthmore, PA.
Giant resin bee nest
Giant resin bee (Megachile sculpturalis) at bee hotel. Swarthmore, PA.
Giant resin bee nest
Nest plug of a sculptured resin bee (Megachile sculpturalis). Swarthmore, PA.
Giant resin bee
Sculptured resin bee (Megachile sculpturalis. Upper Freehold, NJ.
Megachilini
Unidentified Megachilini on milkweed. Saugerties, NY.
Green's giant ichneumonid wasp
Green’s giant ichneumonid wasp (Megarhyssa macrurus) ovipositing into a rotting branch of red maple. Ridley Creek State Park, Media, PA.
Long-tailed giant ichneumon wasp
Long-tailed giant ichneumon wasp (Megarhyssa macrurus) ovipositing into red maple. Ridley Creek State Park, Media, PA.
Two-spotted long-horned bee
Two-spotted long-horned bee (Melissodes bimaculatus) clamped to leaf. Swarthmore, PA.
Melissodes
Female (Melissodes sp.) on sunflower. Swarthmore, PA.
Melissodes
Long-horned bee (Melissodes sp.) on sunflower. Swarthmore, PA.
Monodontomerus sp.
Monodontomerus sp. at bee and wasp house. Swarthmore, PA.
Monodontomerus sp.
Monodontomerus sp. at bee and wasp house. Swarthmore, PA.
Monodontomerus sp.
Monodontomerus sp. at bee and wasp house. Swarthmore, PA.
Monodontomerus sp.
Monodontomerus sp. at bee and wasp house. Swarthmore, PA.
Yellow ants
Yellow ants (Monomorium floricola) on cow skull. Also know as the bicolored trailing ant. Zolfo Springs, FL.
New World banded Thynnid wasp
New World banded Thynnid wasp (Myzinum sp.). Pioneer Park, Zolfo Springs, FL.
Nealiollus sp.
Nealiollus sp. ovipositing into a Berkeley’s polypore. Stoneleigh Gardens, Villanova, PA.
Nealiollus sp.
Nealiollus sp. ovipositing into a Berkeley’s polypore. Stoneleigh Gardens, Villanova, PA.
Neurotoma edwardi
Neurotoma edwardi. Stroud Preserve, West Chester, PA.
Nomad bee
Nomad bee (Nomada, luteola species group). Female. Swarthmore, PA.
Nomad bee
Nomad bee (Nomada sp.). Crow’s Nest Preserve, Elverson, PA.
Trap-jaw ant
Trap-jaw ant (Genus Odontomachus sp.) in antlion trap. Highlands Hammock State Park, Sebring, FL.
Opius sp.
Female braconid in the genus Opius. Emerged from a dodder gall weevil (Smicronyx sculpticollis) growing on Cuscuta. Saugerties, NY.
Horn-faced mason bee
Horn-faced mason bee (Osmia cornifrons) at mason bee house. Swarthmore, PA.
Horn-faced mason bee
Horn-faced mason bee (Osmia cornifrons) capping nesting hole with mud. Swarthmore, PA.
Horn-faced bee
Horn-faced bee (Osmia cornifrons) on window. Swarthmore, PA.
Taurus mason bee
Taurus bee (Osmia taurus) in nesting hole. Swarthmore, PA.
Taurus mason bee
Taurus mason bee (Osmia taurus) at bee hotel. Male. Swarthmore, PA.
Taurus mason bee
Male taurus mason bees (Osmia taurus) at bee hotel. Swarthmore, PA.
Taurus mason bee
Taurus mason bee (Osmia taurus) finishing a mud cap on a nest. Swarthmore, PA.
Parancistrocerus histrio
Parancistrocerus histrio. Swarthmore, PA.
Golden paper wasp
Golden paper wasp (Polistes auriferResearch Grade) on surface of water. Kalaoa, HI.
Polistes bellicosus
Polistes bellicosus at nest. Zolfo Springs, FL.
Polistes dorsalis
Polistes dorsalis ssp. dorsalis eating honeydew on citrus leaf. Zolfo Springs, FL.
Polistes dorsalis
Polistes dorsalis ssp. dorsalis eating honeydew on citrus leaf. Zolfo Springs, FL.
Polistes dorsalis
Polistes dorsalis ssp. dorsalis eating honeydew on citrus leaf. Zolfo Springs, FL.
Polistes dorsalis
Polistes dorsalis ssp. dorsalis eating honeydew on citrus leaf. Zolfo Springs, FL.
Polistes dorsalis dorsalis
Nest of of Polistes dorsalis dorsalis. Myakka River State Park, Sarasota, FL.
Dark paper wasp
Dark paper wasp (Polistes fuscatus) ripped in half by a Chinese mantis (Tenodera sinensis). Cheslen Preserve, Chester County, PA.
Variegated paper wasp
Variegated paper wasp (Polistes versicolor) nest. Urbina Bay, Isla Isabela, Galápagos.
Polistes bellicosus
Polistes bellicosus. Zolfo Springs, FL.
Spider wasp
Spider wasp (Pompilidae) with spider. Possibly Phanagenia bombycina or Auplopus carbonarius. Taylor Memorial Arboretum, Wallingford, PA.
Small honey ant
Small honey ant (Prenolepis imparis) with aphids. Syrphid fly larva is also present. Hildacy Preserve, Media, PA.
Small honey ants mating
Small honey ants (Prenolepis imparis). Queen and two males. Swarthmore, PA.
Small honey ants
Small honey ants (Prenoleis imparis) drinking tree sap in winter. John Heinz National Wildlife Refuge, Philadelphia, PA.
Small honey ant
Small honey ant (Prenolepis imparis) with aphids. Hildacy Preserve, Media, PA.
Sapyga louisi
Sapyga louisi near nest of Chelostoma philadelphi. Swarthmore, Pennsylvania.
Sapyga louisi
Sapyga louisi in nesting hole. Swarthmore, PA.
Eastern cicada killer
Sphecius speciosus (eastern cicada killer). Male, guarding territory. Swarthmore, PA.
Eastern cicada killer
Eastern cicada killer (Sphecius speciosus) on coneflower. Swarthmore, PA.
Eastern cicada killer
Eastern cicada killer (Sphecius speciosus) dragging a paralyzed cicada to burrow. Swarthmore, PA.
Canadian potter wasp
Canadian potter wasp (Symmorphus canadensis) collecting mud for nest. Taylor Memorial Arboretum, Wallingford, PA.
Tufted potter wasp
Tufted potter wasp (Symmorphus cristatus) drinking water at a bird bath. Swarthmore, PA.
Sawfly larva
Unidentified sawfly larva (Tenthredinoidea). Mohonk Mountain House, New Paltz, NY.
Narrow stingless bees
Narrow stingless bees (Tetragonisca angustula). La Selva, Costa Rica.
Immigrant pavement ants
Immigrant pavement ant (Tetramorium immigrans) on a Pepperidge Farm Goldfish. Swarthmore, PA.
Tetrastichinae
Tetrastichinae on cypress gall. Zolfo Springs, FL.
Thrinax dubitata
Thrinax dubitata. ID tenative. One of two sawflies that eats sensitive fern (Onoclea sensibilis). The other, Thrinax albidopicta, is not found in Pennsylvania.Taylor Memorial Arboretum. Wallingford, PA.
Thrinax dubitata gall
Thrinax dubitata gall on sensitive fern (Onoclea sensibilis). ID based on adults on same plant. Crow’s Nest Preserve, Elverson, PA.
Thrinax dubitata larva
Thrinax dubitata larva on sensitive fern (Onoclea sensibilis). Formerly Hemitaxonus dubitatus. Taylor Memorial Arboretum, Wallingford, PA.
Galápagos carpenter bee
Galápagos carpenter bee (Xylocopa darwini) on goat’s head (Tribulus terrestris). Newly introduced to Genovesa Island. Galápagos Islands, Ecuador.
Triepeolus sp.
Triepeolus sp. attached to Iris leaf. Swarthmore, PA.
Sintgless bees
Sintgless bees (Trigona sp.) collecting honeydew from Mexican treehopper nymphs. Playa del Carmen, Mexico.
Trypoxylon
Trypoxylon sp. near bamboo sections. Tyler Arboretum, Media, PA.
Trypoxylon
Trypoxylon sp. female. Tyler Arboretum, Media, PA.
Trypoxylon
Male Trypoxylon sp. guarding nest. Tyler Arboretum, Media, PA.
Trypoxylon collinum
Trypoxylon collinum near nesting hole. Swarthmore, PA.
Trypoxylon collinum
Male Trypoxylon collinum in hole. Swarthmore, PA.
Trypoxylon collinum guarding nest.
Trypoxylon collinum guarding nest. Swarthmore, PA.
Trypoxylon collinum
Pair of Trypoxylon collinum at nest. Provisioning nest with paralyzed spiders. Swarthmore, PA.
Trypoxylon and Caenochrysis
Trypoxylon-collinum fighting off a cuckoo wasp (Caenochrysis sp.). Swarthmore, PA.
Trypoxylon sp.
Trypoxylon drinking water. Crooked River National Grassland, Madras, Oregon.
Trypoxylon sp.
Trypoxylon drinking water. Crooked River National Grassland, Madras, Oregon.
German yellowjacket
German yellowjacket (Vespula maculifrons) eating a cricket. Worker. ChesLen Preserve, Coatsville, PA.
Galápagos carpenter bee
Galápagos carpenter bee (Xylocopa darwini) on goat’s head (Tribulus terrestris). Newly introduced to Genovesa Island. Galápagos Islands, Ecuador.
Eastern carpenter bee
Eastern carpenter bee (Xylocopa virginica). Male. Swarthmore, PA.
Zapatella quercusphellos
Zapatella quercusphellos on bear oak (Quercus ilicifolia). Formerly named Callirhytis quercussimilis, among many others. Mohonk Mountain House, New Paltz, NY.