SeasonalityAdults of this species were collected in June, July and October.
IdentificationElytron with a single preapical puncture; tibiae black or very dark piceous; apex of elytra with strong, isodiametric microsculpture. Colored similarly to N. aquaticus, (black with more or less pronounced metallic, brassy, lustre, segments 1-4 of antennae more or less pale, at least beneath, and tibiae entirely black), as a rule more vividly bronze. Length 4.7 to 5.7 mm.