Size: 5.5-6.2mm

Seasonality: March-October

Distribution; Western USA and Canada, n. BCN-MX

Information: may be found along muddy banks, in fields, in wetland marshes, and among leaf litter. Mostly nocturnal.

Description: body: elongate-ovate, slender. Dorsal colouration varies from glossy black with faint blue iridescence, to pale or dark brown with faint blue iridescence. Ventral colouration glossy black or dark brown; legs pale. Head triangular, face elongate; surface of the head smooth, with evident microsculpture; two triangular dimples on either end of the frons, which continue onto the clypeus. Eyes not reduced in size, but flattened somewhat closer to the head; two supraorbital setae over each eye. Labrum rectangular, dark, lateral and anterior margins opaque yellow. Mandibles strongly curved, dark orange, tips black or dark brown; palpi yellow-brown, tips yellow. Scapus and pedicel pale, the rest of the segments should be pale to dark brown; antennal pubescence begins on the first antennomere (segment 3) following the pedicel. Pronotum quadrate, rounded; anterior margin transverse; anterior angles obtuse; lateral margins thinly beaded, rounded; hind angles obtuse, rounded; basal margin rounded. Pronotal disk very smooth, median line almost fully vanished; lower median bulge very weak, but with a shallow depression on either side of it, rough. Scutellum weakly exposed; laterobasal ridges obscured. 8 well-defined striae per elytron, intervals flattish. Elytral interval along the elytral suture often very pale with brown specimens, and black individuals tend to have a very faint pale lip along the suture. Humeral shoulders rounded-obtuse, sloping apically; lateral margins prallel or nearly so; apices eakly sinuate.