Size: 3.5-4mm

Seasonality: March-October

Distribution; OR, ID, CA, NV, UT, AZ, CO

Information: A.laticollis can be found running around or resting upon/under stones and gravel, sandy substrates, and on concrete on hot days.

Description: body: elongate-quadrate, slender. Body, dorsal and ventral faces, glossy silvery-bronze. Head fairly large compared to pronotum size; wide, triangular.  Head smooth, slight wrinkles around the eyes; eyes fairly large, but close to head. Face short, mandibles small. Antennae black, antennal pubescence begins on the first antennomere after the pedicel. Pronotum cordate-triangular, hind angles obtuse, pronotum about the same dimensions as the head. Front pronotal angles acute, margins rounding inwards towards head slightly. Pronotal lateral margins thin, not well-defined, but slightly upturned. Median line deep. Abdominal/elytral regions elongate-truncate. 8-9 striae per elytron, intervals elevated into minor costae. Elytral apices truncate, tip of abdomen protruding barely from underneath elytra. Humeral angeles squared, rounded off. Ventral faces glossy black, legs glossy black. Body relatively flat.