Yellow fairy cups (Calycina citrina) on rotting log. Rose Tree Park, Media, PA.
Wolf’s milk (Lycogala epidendrum). Swarthmore, PA.
Bald-faced hornet (Dolichovespula maculata). Overwintering queen. Swarthmore, PA.
Cypress twig gall midge (Taxodiomyia cupressiananassa). Swarthmore, PA.
Beech woodwart (Hypoxylon fragiforme). Crum Woods, Swarthmore, PA.
Beech woodwart (Hypoxylon fragiforme). Crum Woods, Swarthmore, PA.
Beaver-gnawed tree enclosed in fencing. Crum Woods, Swarthmore, PA.
Downy yellowjacket (Vespula flavopilosa) on tree trunk. Crum Woods, Swarthmore, PA.
Spotted lanternflies (Lycorma delicatula) on tree trunk. Crum Woods, Swarthmore, PA.
Pair of witch-hazel cone galls (Hormaphis hamamelidis). Crum Woods, Swarthmore, PA.
Northern flattid planthopper (Flatormenis proxima). Crum Woods, Swarthmore, PA.
Hornbeam leaf gall midge (Dasineura pudibunda). Springfield, PA.
Bathroom moth fly (Clogmia albipunctata) resting on computer monitor. Swarthmore, PA.
Mulberry leaf spot (Cercospora moricola). Springfield, PA.
Oak pea gall wasp (Acraspis pezomachoides) on white oak. Hildacy Preserve, Media, PA.
Aceria triplacis (formerly Eriophyes triplacis) gall on white oak. Often misidentified as Taphrina caerulescens (an ascomycete fungus). Hildacy Preserve, Media, PA.
Oak pea gall wasp (Acraspis pezomachoides) on white oak. Hildacy Preserve, Media, PA.
Ghost spider (Anyphaena sp.) in retreat next to cynipid gall. Hildacy Preserve, Media, PA.
Adaxial surface of oak leaf damaged by oak skeletonizer moth (Bucculatrix ainsliella). Hildacy Preserve, Media, PA.
Cocoon of an oak skeletonizer moth (Bucculatrix ainsliella) on abaxial surface of white oak leaf. Hildacy Preserve, Media, PA.
Cameraria sp. leaf mine in white oak. ID tentative. Hildacy Preserve, Media, PA.
Andricus quercusflocci gall on upper side of white oak leaf. ID tentative. Approximately 6 mm in diameter. Hildacy Preserve, Media, PA.
Large milkweed bug (Oncopeltus fasciatus). Nymph. Hildacy Preserve, Media, PA.
Dotted leaftier (Psilocorsis reflexella) caterpillar. ID tentative. Hildacy Preserve, Media, PA.
Dotted leaftier (Psilocorsis reflexella) caterpillar. ID tentative. Hildacy Preserve, Media, PA.
Beech leaves inhabited by dotted leaftier (Psilocorsis reflexella) caterpillar. ID tentative. Hildacy Preserve, Media, PA.
Beech leaves inhabited by dotted leaftier (Psilocorsis reflexella) caterpillar. ID tentative. Hildacy Preserve, Media, PA.
Ancylis platanana caterpillar on American sycamore (Platanus occidentalis). Hildacy Preserve, Media, PA.
Tube of Snetsinger’s purseweb spider (Atypus snetsingeri).
Spined fruit of oneseed bur cucumber (Sicyos angulatus). Hildacy Preserve, Media, PA.
Eggplant webworm (Rhectocraspeda periusalis) on tomato.
Eggplant webworm (Rhectocraspeda periusalis) on tomato.
Eggplant webworm (Rhectocraspeda periusalis) on tomato.
Scarlet sesbane (Sesbania punicea) fruit pod. Zolfo Springs, FL.
Graylet moth (Hyperstrotia sp.) larva on scarlet Sesbania (Sesbania punicea). ID tentative. Zolfo Springs, FL.
Eudiagogus maryae on scarlet sesbane (Sesbania punicea). Zolfo Springs, FL.
Graylet moth (Hyperstrotia sp.) larva on scarlet Sesbania (Sesbania punicea). ID tentative. Zolfo Springs, FL.
Pale-edged Selenisa (Selenisa sueroides) larva on scarlet sesban (Sesbania punicea).
Caterpillar of Zarucco duskywing (Erynnis zarucco) on scarlet sesban (Sesbania punicea). Zolfo Springs, FL.
Caterpillar of Zarucco duskywing (Erynnis zarucco) on scarlet sesban (Sesbania punicea). Zolfo Springs, FL.
Assembly moth (Samea ecclesialis) on fern frond. Zolfo Springs, FL.
Splitgill mushrooms (Schizophyllum commune) growing on dead tree. Zolfo Springs, FL.
Twice-stabbed lady beetle (Genus Chilocorus sp.) Zolfo Springs, FL.
Geranomyia virescens on tomato leaf. ID tenative. Zolfo Springs, FL.
White-footed leafcutter bee (Megachile albitarsis) with a leaf section. Zolfo Springs, FL.
White-footed leafcutter bee (Megachile albitarsis) resting with cut leaf. Zolfo Springs, FL.
Polistes bellicosus at nest. Zolfo Springs, FL.
Hyalymenus sp. feeding on scarlet sesbane (Sesbania punicea) fruit. Zolfo Springs, FL.
White-footed leafcutter bee (Megachile albitarsis) cutting a leaf disc out of air potato (Dioscorea bulbifera). Zolfo Springs, FL.
Eastern amberwing (Perithemis tenera) perched on leaf. Zolfo Springs, FL.