Cremastocheilus hirsutus

One of about forty-five species of myrmecophilous Cremastocheilus. The host ant is Pogonomyrmex barbatus and Pogonomyrmex maricopa.

Distribution
Arizona, New Mexico

Habitat
Common host is Pogonomyrmex barbatus and Pogonomyrmex maricopa.

Nomenclature
Type, a unique is in the Van Dyke collection at the California Academy of Science. Captured near Prescott, Ariz., June 11, 1910 by Mr. J. Aug. Kusche and by him kindly present to Van Dyke.

Description
(from Van Dyke, 1918) Robust, castaneous, subopaque, clothed with yellowish pubescence, long on the elytra and median portion of pronotum, elsewhere moderate in length. Head moderately closely punctured posteriorly, finely and sparsely punctured in front, occipital region transversely depressed, widest across eyes and rapidly narrowing behind them; clypeus viewed from above, rounded at sides and almost transverse in front, with a well-marked carina at middle which, however, does not reach the anterior margin but projects forward free and horn-like, margin widely reflexed and forming an elevated semicircle as seen from in front, fimbriated at sides; submental plate transversely oval, pointed behind, the sides and posterior margin reflexed, the latter quite markedly.