| OCR Text |
Show 196 and (1952b) Edmunds and Taxonomy of related species Rhithrogena occurring rocks the on The streams are above in the are swiftest the and and the and, a once of of males nymphs of subgenus. new unique structure of 5,000 in small, feet where rapidly flowing they portion of the current. biology other from all nymphs by gill structures. usually found elevations reports that single June known, may represent male, nymphs known about late in Idaho easily distinguished by are penes nymphs. Biology species the tbe species is distinct taxonomically This Adults of the adults. have been live Little Edmunds collected on is (1952b) in utah during early July. Distribution Rhithrogena robusta is species previously unreported specimens which the from eleven counties following are a boreal western North American from Idaho. and I have twenty-four examined localities of representative. BOUNDARY Co.: Records.Moyie Riv. on U.S. Hwy. #95, at KOOTENAI Co.: Hayden Canadian Border, 26-111-65, (N), AVN. Cr., } mi. above mouth, 11-111-65, (N), WFB, SDS, and L. Joe at st. Falls Cr. Co.: SHOSHONE Riv., jct. Hawkins, (UI). LATAH 16 mi. E. st. Maries, 25-111-65, (N), AVN; (+ 1). Co.: IDAHO J. (UI). Mallet, Co.: Kendrick, x-58, (N), Lochsa Riv. on U.S. HWy. #12, 30 mi. SW. Lola Pass, 19-VI-64, Riv. on U.S. HWy. #95, 12 mi. Salmon Little and AVN WCP; (N), Geertson Cr. LEMHI Co.: S. Riggins, 24-111-65, (N), AVN. jct. Lemhi Riv., 7 mi. SE. Salmon, Salmon Natl. For., t |
