Figs 15, 30, 45
Mamestra hueco Barnes, 1904: 198.
Type material. Syntypes [ USNM, examined].Type locality: USA, Arizona, Huachuca Mts.
Other material examined and distribution. USA: Arizona. Cochise Co. (Chiricahua and Huachuca Mts), Graham Co. (Pinaleno Mts), and Santa Cruz Co. (Santa Rita Mts).
Diagnosis. Hypotrix hueco is superficially similar to H. alamosa, but averages larger (forewing length: 14–16 mm), the medial area is pale with whitish shading that contrasts with the darker color of the basal and subterminal areas, and the postmedial line is well removed from the outer edge of the reniform spot. Th e outward displacement of the postmedial line results in a very narrow subterminal area, similar in width to the terminal area. Surprisingly, the male genitalia are most similar to those of H. lunata, with a high dorsal tuft of setae on the broadly spatulate uncus and the cucullus is long and tapered with a folded depressed area at the base of the dorsal margin. Th e vesica is about 3 × as long as the aedeagus; there are two spiny clusters where the aedeagus joins the vesica, a row of three long spike like cornuti near the vesica base, and a premedial coil. The female genitalia are similar to those of H. lunata, but the appendix bursae has only one coil.
Distribution and biology. Hypotrix hueco is known only from southeastern Arizona. Collecting dates range from mid-June to mid-August.