Psephenidae (water penny beetles)
From Newsworks on WHYY-FM 90.9:
Turns out eight-year-olds aren’t the only ones who love great piles of leaves. Tara Muenz, education manager at Stroud™ Water Research Center in Avondale, loves them too. And so do the critters that help Muenz and other determine the health of the watershed: macroinvertebrates.
