Orconectes propinquus, small, stream and lake native

Orconectes virilis, our most widespread native crayfish, light individual

Orconectes virilis, dark individual

Orconectes rusticus, invasive alien from the Midwest

Orconectes obscurusus, introduced, nearest native populations northern New York

Orconectes immunis, burrowing crayfish of ponds and temporary headwaters

Cambarus diogenes, burrow-dwelling crayfish

Cambarus robustus, burly southwestern Ontario stream-dweller