SOME ONTARIO CRAYFISH
Paintings by Aleta Karstad
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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
Copyright held by Aleta Karstad, images available upon request
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