Taenionema jacobii Stanger & Baumann

(Figs. 48, 90, 103)

Distribution. Southwest; Arizona and New Mexico.

Material examined. New Mexico: Grant Co., Cherry Creek at Hwy. 255 bridge, 14-III-1984, G.Z. Jacobi & D.U. Potter, 4♂ larvae and 5♀ larvae; same data, separate vial, 3♂ larvae and 1♀ larva labeled “ holotype 4 N” .

Characters. Color, pigmentation, maxillae, body, leg (Fig. 48) and cercal setation, and sexual dimorphism generally typical of genus. Body small, ♂ and ♀ 6-7 mm. Antennal segments ♂ 56-60, ♀ 60-64. Cercal segments ♂ and ♀ 42-44. Male 9 th sternum (Fig. 90) broadly triangulate behind greatest width, with broadly rounded apex; anterior portion broadly triangulate with straight sides. Female 9 th sternum (Fig. 103) narrowly triangulate behind greatest width, with nearly straight posterolateral sides and anterior portion with slightly convex sides.