| OCR Text |
Show 100 BLAINE Co.: Upper Sawtooth Valley Galena Pass, 23-VIIat jct. Ida. Hwy. below 65, (A), WFB, (UI) TETON Co.: Badger Cr. #32, 1 mi. S. Felt, 22-VI-64, (N), SLJ and Genus The in occurring forked or hind gills other (1) Vein MP and with the costal projections each tarsus similar; base are longer than eighteen occidentalis Eaton the two autumnalis adults are on segments The of £. of obtuse (3) and one the Abdominal and two. species presently assigned occur following keys nymphs wings (1) Nymphse columbianus known to dis- Siphlonuridae of hind in McDunnough Idaho. McDunnough may eventually mature IThe nymphs double species, . state. and tibiae. North American S. genus, in the the with lamellae this occur of claws of genera to serve Adults. to tion, . characters genus cordate Of of 1868 Idaho: (Fig. 7); tarsi Eaton from all the near absent combinations following this tinguish Siphlonurus JWR. these columbianus serve In and addi- be found to distinguish to species.l and. occidentalis are I have compared reared difficult to distinguish. specimens of both species and am able to find only minor, The key by Day (1956) to possibly variable differences. separate the two species is based on highly variable char The key presented acters and is therefore of little value. As most records of . herein is probably equally invalid. columbianus in this study are based on nymphs, they must very be considered as questionable. |
