Taenionema grinelli (Banks)

(Figs. 9, 19, 26, 40, 47, 58, 70, 79, 89, 102)

Distribution. California.

Material examined. California: Los Angeles Co., Placerita Canyon Creek, Placerita State Park, 21- I-1985, R. W. Baumann & K. Dobry, ♂ and ♀ larvae (no adults were collected at the same time in this intermittent, seasonal creek, but a male and female were collected here 24-IV- 1980, and it is unlikely that congeners are present); 1 vial of S.G. Jewett, Jr. collection with no locality, 1 -II- 1954, 5♂ larvae and 1♀ larva labeled “ Brachyptera grinelli (Bks.) ”

Characters. Color, pigmentation (Fig. 9), leg (Fig. 47) and cercal setation, and sexual dimorphism (Figs. 59, 70, 79) generally typical of genus. Body (Fig. 19) and legs (Fig. 47) with more surface hairs than other species. Body length ♂ 9mm, ♀ 10-11mm. Antennal segments 62-65. Cercal segments undetermined (broken). Male 9 th sternum (Fig. 89) ovate with rounded apex. Female 9 th sternum (Fig. 102) distinctively shaped, with posterolateral sides concave.