10a
Rostrum short and A margins uniform in thickness; B
first form male gonopod with dorsal element sickle shape and not
protruding in a downward slope; C third or fourth tubercle on
mesial margin of fixed finger not enlarged; D chela lacking
strong dorsolongitudinal ridges
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Cambarus (C.) b. bartonii
10b
Rostrum elongated and A margins thickened; B first
form males with dorsal element hook shaped, ending in a downward
position C third or fourth tubercle on mesial margin of fixed
finger enlarged; D Chela with dorsolongitudinal ridges; (note
this species is currently designated as Cambarus carinirostris,
however it is currently under review to be elevated to a new species, it
is currently under investigation by Zach Loughman, West Liberty State
College)
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Cambarus carinirostris
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Dr. Tom Jones