Size: 11-19mm

Seasonality: March-November

Distribution; throughout Canada, the USA, and Northern Mexico

Information: found along the banks of rivers, lakes, and other waterways; primarily nocturnal, may be seen during the day under stones and plant material along the banks. On occasion a semi-iridescent brown variant may be stumbled across, not particularly common.

Description: body: ovate, semi-robust. Dorsal colouration: head bright, metallic green or green-blue, pronotal disk iridescent green, slightly duller than the head, head punctate. Ventral faces: dark, sparse pubescence scattered across ventral faces. Legs dark or pale yellow-orange. Head triangular, face long, base of the head weakly constricted into a neck. Mandibles reddish-orange, inner margin black, tips curved. Labrum short, rather brod; rectangular. Lower mouth parts and first three antennal segments orange or dark yellow; rest of antennae dark; full antennal pubescence begins on the second antennomere following the pedicel, with only a small amount of pubescence on the first following the pedicel. Eyes not reduced in size, but do not bulge strongly. Pronotum semi-quadrate; anterior margin transverse, or nearly so; anterior angles acute, jutting forward slightly; lateral margins rounded, rounding forward beginning at the midway point, or sinuous (see dorsal image 2); hind angles weakly obtuse, or squared; basal margin weakly sinuous. Pronotal disk heavily micropunctate; median line varies in definition. Scutellum exposed. 8-9 shallow, occasionally thinly pitted striae per elytron, intervals flat. Elytra should be fully pubescent. Humeral shoulders obtuse, sloping apically; lateral margins rounded; apices pointed slightly, rounded.

Larval photo and information at bottom of page.