Size: M:  5-6mm     F:  6.8-7.2mm

Seasonality: February-November

Distribution; Western USA and Canada

Information: Can be found on the banks of waterways and oceanside beaches. May be found in congregations during the day beneath plant debris and stones along the banks, individuals will dig burrows to take shelter in during the day. Nocturnal predators.

Omophron ovale found inland (photo on right) generally have larger elytral maculations, and are much duller than their oceanside kin. The maculations tend to be dark, semi-glossy blue-green. Those found on beaches along the Pacific West Coast (photo to left) are typically more brightly coloured, with bright, iridescent green maculations, which cover much less of the elytra than those found inland. Diagrams of the maculation patterns are displayed below their corresponding photos.

Description: body: compact-compact. Ventral faces: pale or dark brownish-yellow, all appendages pale yellow. Dorsal: head has pale yellow, upside-down 'V' marking directly above the clypeus, the rest of the dorsal face of the head should be iridescent green.  Head broad, short face. Minor wrinkles around the eyes, small fovea around the occiput. Pronotum: heavily punctate near the margins, margins not upturned, centre of pronotal disk iridescent green, generally smooth, on the left and right edges of the green mark are wide 'C' shaped macules, both pale yellow. Elytra: 13-14 well-defined striae per elytron, each striation lined with numerous, closely-spaced fovea. Sutural margin bright green or dull brown depending on the region, uneven macules of identical colours branch off from this sutural point. Four uneven rows of wide, blotchy macules may be separated depending on the macule size, or are conjoined, creating the appearance of one large mass. Elytral colouration around these macules pale yellow or yellow-brown.

Larval stage shown below.