Pennsylvania Biological Survey

Scientists, wildlife managers and policy makers working together to sustain biological diversity

Monongahela Barbara’s-buttons Marshallia pulchra Wikimedia Commons

Monongahela crayfish Cambarus monongalensis ©Roger Earl Latham

northeastern bulrush Scirpus ancistrochaetus ©Arthur Haines

golden-winged warbler Vermivora chrysoptera ©www.briansmallphoto.com

bog turtle Glyptemys muhlenbergii George Grall ©National Aquarium

northern long-eared bat Myotis septentrionalis ©Phil Swanson

Loyalhanna lichen ©James Shaulis

American globeflower Trollius laxus ©Ann F. Rhoads

Chesapeake logperch Percina bimaculata ©Rob Criswell

flypoison bulb-borer moth Papaipema sp. 1 ©Roger Earl Latham

wood thrush Hylocichla mustelina ©Ed Schneider www.edschneiderphotography.com

shorthead garter snake Thamnophis brachystoma ©David Badger

Wyandot grizzled skipper Pyrgus centaureae wyandot © Jeffrey S. Pippen

scarlet tanager Piranga olivacea www.animalspot.net

mountain chorus frog Pseudacris brachyphona ©Paul Sattler Virginia Herp Soc

Kates Mountain clover Trifolium virginicum ©Roger Earl Latham

timber rattlesnake Crotalus horridus ©Richard Sanderson

Allegheny woodrat Neotoma magister ©Cal Butchkoski

worm-eating warbler Helmitheros vermivorum ©Danny Bonilla

serpentine aster Symphyotrichum depauperatum ©Roger Earl Latham

eastern regal fritillary Speyeria idalia idalia ©Bill Bouton

checkered sculpin Cottus n.sp. ©Rob Criswell

spreading rockcress Arabis patens ©John R. Gwaltney www.southeasternflora.com

crayfish Cambarus (Puncticambarus) sp. ©Jim Fetzner

hellbender Cryptobranchus alleganiensis ©Mike Pinder

Henslow’s sparrow Ammodramus henslowii ©Howard B. Eskin

lichen Opegrapha bicolor ©James Lendemer

glade spurge Euphorbia purpurea ©Alan Cressler

northern coal skink Eumeces anthracinus ©David Badger

tundra swan Cygnus columbianus ©Willard C. Hill

freshwater pearl mussel Margaritifera margaritifera Joel Berglund

American climbing fern Lygodium palmatum Lucien Taylor ©NE Wildflower Soc

green-faced clubtail Gomphus viridifrons ©Jeffrey S. Pippen

streamline chub Erimystax dissimilis ©Rob Criswell

cerulean warbler Dendroica cerulea Wikimedia Commons

isopod Caecidotea kenki ©W. K. Jones

Monongahela Barbara's-buttons Marshallia pulchra Wikimedia Commons

© Pennsylvania Biological Survey 2023
Website administrator: Roger Latham