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Show 259 adults Allen and Edmunds (1962) provide descriptions and mature of E. nymphs grandis to characters and the of separate the subspecies. and Taxonomy The Biology and nymphs distinguished from adults . g. of this subspecies are easily ingens by characters given in the keys. warmer They of rivers and have been rivers this streams they streams and subspecies collected feet where 71000 been Nymphs reported by are among Allen occur quite commonly in throughout southeastern Idaho. at elevations often large ranging numerous rocks and Edmunds and in from 41000 to moderately flowing gravel. Adults have (1962) from boreal western North early June to early July. Distribution Ephemerella g. grandis is a American subspecies previously unreported from Idaho. examined specimens from nine counties ties of which the following are and I have twenty-four locali- representative. Lemhi Riv. on Ida. Hwy. #281 6 mi. S. LEMHI Co.: dUSTER Co.: Basin Cr. Lemhil 7-111-65, (N)1 AVN; (+ 1). at jct. Salmon Riv.1 ca. 10 mi. E. StanleYI 7-111-651 (N), Fork at FREMONT Co.: (Snake River) AVN. Henrys jct. U.S. Hwy. #191-201 at Macks Inn, 24-VI-64, (N), SLJ and JWR; Teton Fork at North TETON Co.: Riv. (+ 5). jct. Ida. Hwy. #321 22-Vr-641 (N)1 SLJ and JWR. BONNEVILLE Co.: Rainey u. S. Hwy. #261 at Swan Valley 1 21-VI-64, (N), SL'J Cr. at jc t Records.- . |
