Size: 6-8mm

Seasonality: March-November

Distribution; North America

Information: can be found along rocky banks of rivers and lakes, among other locations, attracted to UV and mercury vapour traps. Mostly nocturnal.

Description: body: elongate-ovate, slender. Head triangular, face longish, dorsal surface of head smooth, head glossy black. Eyes small, strongly bulging laterally; one, long supraorbital seta per eye. Maxillary palps dark or pale yellow. Scapus and pedicel yellow, rest of antenna pale or dark brown. Antennal pubescence begins on the second antennomere following the pedicel. Pronotum rounded-quadrate. Hind angles rounded-obtuse, lateral margins rounded, front angles hardly acute; lateral margins thin, weakly upturned. Dorsal surface of the pronotal disk along the base micropunctate, median line thin, shallow; short, shallow wrinkles fan out laterally from the median line. Pronotal disk glossy, pale yellow, generally with a small black macule at the centre of the disk. Basal margin does not overlap the elytral base, leaving the scutellum exposed. 8-9 deep, well-defined striae per elytron, intervals slightly raised. Humeral shoulders squarish, rounded slightly; lateral margins rounded-elongate; apices rounded. Most of each elytron should be pale yellow in a sort of "]" shape, while the interior of that "]" should contain a narrow, long, black macule. The black macules (one per elytron) begin on, or immediately after, the first elytral interval, ending on the fourth or fifth interval.  The two macules begin just below the elytral base, then end about that same distance above the apices. Ventral faces semi-pale to dark glossy-piceous, nearly black, legs pale yellow. Flight wings fully developed in most specimens.