Williams, Bogan, & Garner, 2008 report 120mm max. for imbecillis.
Could it be a Pyganodon? cataracta to 170mm, grandis to 254mm.

John
Lancaster, PA


>I've just returned from a visit to my sister-in-law's farm just
>north of Charlottesville, VA, just on the east side of the Blue
>Ridge. In the drought this summer, a raccoon, most likely, dug up an
>Utterbeckia imbecillis (Say, 1829) from their farm pond (that's
>"stock tank" for the Texans among us) so, naturally, I commandered
>it and brought it home with me. It's just about identical to those I
>recovered from Lake Blackshear here in south Georgia when its dam
>broke a while back. There is a difference, however, that shakes my
>confidence in the ID. That is that the thing is 153 mm long. Does
>anyone know if U. imbecillis gets that big?

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