Achrastenus griseus Horn, 1876
Family: Curculionidae
Achrastenus griseus image
Nico Franz  
Form oblong oval, gradually narrower anteriorly, surface densely covered with greyish scales, irregularly variegated on the elytra with darker spots. Head and rostrum as long as the thorax; a fine medium line extending to the vertex, surface moderately densely scaly. Thorax cylindrical, somewhat narrower in front, slightly longer than wide; apex truncate, base feebly arcuate, sides moderately arcuate, disc convex, moderately densely, but not coarsely, punctured. Elytra oval, one and a half times longer than wide, conjointly emarginate, humeri oblique, feebly prominent, sides moderately arcuate and gradually divergent, apex feebly prolonged; disc moderately convex, feebly striate, striae with moderate, not closely placed punctures, intervals feebly convex, surface densely scaly, each interval with a single row of minute setae. Body beneath and legs densely scaly, and sparsely setose. Anterior tibiae with distant denticulations within; at tip (also the middle tibiae) finely mucronate. Length 0.20-0.24 inch; 5-6 mm.

In many of the specimens the intervals slightly alternate in the degree of their convexity.

Occurs in Texas.

The National Science Foundation
This project made possible by National Science Foundation Award EF 1207371