Ocellate gall midge
Ocellate gall midge (Acericecis ocellaris). Willistown, PA.
Asian tiger mosquito
Asian tiger mosquito (Aedes albopictus). Swarthmore, PA.
A male Asian tiger mosquito (Aedes albopictus) nectaring on swamp milkweed (Asclepias incarnata).
Newly eclosed Asian tiger mosquito (Aedes albopictus) on water. Male. Springfield, PA.
Newly eclosed Asian tiger mosquito (Aedes albopictus) that had developed in an indoor water bowl for pets. This is a male (e.g., note large, extended maxillary palps; cercus at abdomen). Swarthmore, PA.
Asian bush mosquito
Asian bush mosquito (Aedes japonicus) with blood meal. Also known as Ochlerotatus japonicus. Media, PA.
Amblyonychus sp.
Robber fly (possibly Amblyonychus sp.) with prey. Guanacaste province, Costa Rica.
Amobia sp.
Amobia sp. near nest of wasp (Trypoxylon collinum). Swarthmore, PA.
Grape filbert gall
Grape filbert gall (Ampelomyia vitiscoryloides). On wild grape. Formerly named Schizomyia coryloides. Rushton Woods Preserve, Willistown, PA.
Grape filbert gall (Ampelomyia vitiscoryloides). Fomerly known as Schizomyia coryloides. Gambier, Ohio.
Anthomyia illocata
Anthomyia illocata. From Asia. Swarthmore, PA.
Anthrax georgicus
Anthrax georgicus. Male. Hildacy Farm Preserve, Media, PA.
Antocha sp.
Antocha sp. on rotting stump. ID tentative. Swarthmore, PA.
asteromyia-carbonifera-goldenrod
Euthamia leaf gall midge (Asteromyia euthamiae)
Euthamia leaf gall midge (Asteromyia euthamiae). Hildacy Farm, Media, PA.
Bermudagrass stem maggot
Bermudagrass stem maggot (Atherigona reversura). Zolfo Springs, FL.
Atomosia puella
Atomosia puella. Goshen Trail, Newtown Square, PA.
Atomosia puella. Taylor Memorial Arboretum, Wallingford, PA.
Atomosia puella with prey. Swarthmore, PA.
Atomosia puella. Swarthmore, PA.
Bibio longipes
Male, perched on seed of Japanese knotweed. Smedley Park, Springfield, PA.
Eastern phantom crane fly
Male eastern phantom crane fly (Bittacomorpha-clavipes). Crow's Nest Preserve, Elverson, PA.
Common wood fly
Common wood fly (Blera badia). Little Crum Creek Park, Swarthmore, PA.
Houdini fly
Houdini fly (Cacoxenus indagator). Swarthmore, PA.
Pink gall
Possibly Rhopalomyia (Cecidomyiidae). On rabbitbrush. Prineville Reservoir, Prineville, OR.
Hackberry thorn gall midge
Hackberry thorn gall midge (Celticecis spiniformis). Media, PA.
Cerotainia albipilosa
Cerotainia albipilosa. Gambier, Ohio.
Cerotainia macrocera
Cerotainia macrocera eating a thrips. ID tentative. Hildacy Preserve, Media, PA.
Snow fly
Male snow fly (Chionea scita). Mohonk Mountain House, New Paltz, NY.
Chironomidae
Midge (Chironomidae). Zolfo Springs, FL.
Quadrate snipe fly
Quadrate snipe fly (Chrysopilus quadratus). Swarthmore, PA.
Golden-backed snipe flies
Golden-backed snipe flies (Chrysopilus thoracicus). Swarthmore, PA.
Golden-backed snipe fly
Golden-backed snipe flie (Chrysopilus thoracicus). Swarthmore, PA. Swarthmore, PA.
Male golden-backed snipe fly (Chrysopilus thoracicus). Swarthmore, PA.
Chrysopilus thoracicus (golden-backed snipe fly). Rushton Woods Preserve, Willistown, PA.
Bathroom moth fly
Bathroom moth fly (Clogmia albipunctata) resting on computer monitor. Swarthmore, PA.
Condylostylus mundus
Male Condylostylus mundus. Zolfo Springs, FL.
Condylostylus sp.
Condylostylus sp. with prey. Zolfo Springs, FL.
Cordyligaster septentrionalis
Cordyligaster septentrionalis. Rusthton Preserve, Willistown, PA.
