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Diver #2 - Ilybius biguttulus

Diver #2 - Ilybius biguttulus
Medford, (~25 miles east of Philadelphia, PA) Burlington County, New Jersey, USA
June 23, 2010
Size: 10.5mm
not much to see on the dorsal. Looks like Ilybius? Venter seems to show setae on the apical metafemur. Suggestions welcome :)

came to UV light

Images of this individual: tag all
Diver #2 - Ilybius biguttulus Diver #2 - Ilybius biguttulus Diver #2 - Ilybius biguttulus

Ilybius biguttulus (Germar)
Based on a combination of diagnostic characters: shallow emargination of the terminal segment, body size, and relatively broad metasternal wing. Most similar to eastern I. incarinatus and I. confusus but can be separated by metasternal wing width (narrower in the other 2 species) and elytral sculpture (need scope to confirm). Thanks for the nice detailed images!

for the ID


Due to emarginate terminal abdominal segment. Possible to get an enlargement of that region? It may get it to species...if not possible trying keying it out using Larson (2000).

Ilybius, seconded