Size: ~17-25 mm         

Seasonality: Active between March and November

Distribution; Most common in Utah but also occurs in California, Arizona and Nevada.

Information:

This species often lives in riparian areas under rocks and logs. It can be found at night feeding on the bark of Quercus gambeli.

Description: Body; Ovate robust, entirely black, with a slight sheen, appendages black with orange setae on the underside of the coxa, femora, tibiae and tarsi. Tarsal formula: 5-5-4. Antennae black; clavate; 11-segmented with a 1-segment club. Pronotum entirely matte black; semi-cordate, and with an array of bumps and pits the latter of which sports a single small white seta curved anteriorly. Elytra: black with a slight sheen, muricated. The murication consists of unique flattened tubercles that are often slightly geometrical. Head: pentagonal or hexagonal, with sparse, shallow punctures, opaque black. Entire ventral surface covered in small, shallow punctures besides the prosternum and mesoventrite which exhibit small tubercles. These punctures are most dense and deep on the metaventrite and most shallow on the fifth abdominal ventrite, forming a gradient between the two areas.