Ampelisca abdita vs. Anpleisca vadorum
Ampelisca abdita (left) vs. Ampelisca vadorum (right)What the top image leaves out, unfortuneately, is that A. vadorum's antennae aren't just longer, but they are much, much less setose. Also, as the bottom image indicates, the urosome has a distinctly different shape. "urosome segment 2+3, posterodorsal margin slightly concave; upturned distally." (LeCroy, 2002)
posted by Scott; Karin @ 11:57 AM
1 comments
1 Comments:
Were those amphipods stained with something? The freshwater amphipods I've been working with have been quite variable in body pigmentation, even though they're all (putatively) the same species (Hyalella azteca).
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