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Dytiscidae ?? - Lioporeus pilatei

Dytiscidae ?? - Lioporeus pilatei
7 mi. South Lake City, Craighead County, Arkansas, USA
July 26, 2011
Size: ~4 mm
Got two of the same at MV lights near swamp. Was able to get dorsal and ventral at the same time using the two. ID help appreciated..

Images of this individual: tag all
Dytiscidae ?? - Lioporeus pilatei Dytiscidae ?? - Lioporeus pilatei

Sorry..messed up on this one
I'm now convinced that this is Lioporeus pilatei. Note the broadened 4th and 5th antennomeres visible in the lateral view, characteristic of males of this species. In addition to this both habitus (narrow, subparallel form) and coloration (infuscate pronotum and elytra pattern) support the ID pretty well.

thanks so much appreciate the research of finding this a home...


Moved from Heterosternuta.

Heterosternuta sp.
Can't tell species from the pics- need more views (a lateral) and/or dissection of the male aedeagus. Arkansas is within a species rich area for this genus so narrowing down the suspects is challenging.

Moved from Beetles.

yup; looking smart...
too fuzzy for me to tell --one of our experts will-- but likely something in the Bidessini [do i see hints of those small laterobasal folds on the pronotum?]

folds on the pronotum do not appear, that I can see... Thanks for your help.

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