(13) Isoperla sobria,

Butte Co., CA, Butte Creek (BCCH), Cherry Hill Campground, Humboldt Rd, 9 mi (14.4 km) NE Lomo (Hwy 32), 26-IV-2010 (♂ reared); Plumas Co., CA, Spring Tributary of Lake Davis (STLD), Threemile Valley Rd, at corral, 06-VI-2010 (♂ ♀ reared); Mosquito Spring creek (MS), 0.4 mi (0.6 km) E Domingo Spring Campground, 7.4 mi (11.9 km) W Chester, 05-VI-2010 (♂ ♀ reared) .