Re: NANFA-- Crayfish ID
Mon, 3 Jan 2000 09:07:59 EST

In a message dated 1/2/00 11:22:04 AM, writes:

<< Keith Crandall's site, which Ron posted a link to, is really good. The
section on WV crayfishes is a good place to start. However, accurate
identification of crayfishes is pretty dependent on male naughty bits, and
then only of Form I males. Pictures are nice, but color can be a deceiving

If you flip your crayfish over, and look at the legs under the tail, they
are easy to sex - the pair of legs nearest the abdomen are modified into an
intromittent organ in males- they lie close to the body and project towards
the head. The terminal end of it is variously modified, with from one to
several projections, and may be bent at various angles, or even hook-like.
In females they look like the other legs under the tail.

Most of the crayfish in the MD area are in the Form I stage during late Fall
and early winter- right now. When I get back to Alabama (a couple of days
from now), I can send you a photocopy of a key to MD/WV crayfishes. You
should be able to ID it relatively easily with just a magnifying glass.

Dave >>

That would be great. Is there a good book on crayfish of the midatlantic
Dave Hough
Point of Rocks, MD

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