Sweltsa resima Surdick, 1995

Nye, Kelly C. & Stark, Bill P., 2010, A Scanning Electron Microscopy Study Of The Epiprocts Of Western North American Sweltsa (Plecoptera: Chloroperlidae), Illiesia 6 (18), pp. 248-255 : 252

Sweltsa resima Surdick

( Figs. 13-18 )

Sweltsa resima Surdick, 1995:161 .

Holotype ♂ ( United States National Museum), California, Inyo Co., Whitney Portal

Material examined. CALIFORNIA: Inyo Co.: Division Creek, north of Independence , 7 June 1986, D. Giuliani, 2♂, 2♀ ( MLBM) . Lone Pine Creek, Whitney Portal , 36.34° N, 118.14° W, 28 July 2005, E. Drake, 8♂, 2♀ ( KWS) .

Male epiproct. Total length ca. 600-654 µm, basal width ca. 230-260 µm, greatest width ca. 400-430 µm. Epiproct somewhat saggitate in outline with upturned tip and broad apically expanded mesal groove ( Figs. 13-16 ). Dorsal surface bearing dense pile of short, multifilament setae ( Fig. 17 ); ventral surface glabrous.

Dorsal process. Located on tergum 9. Total width ca. 180-190 µm, median notch shallow, ca. 100-140 µm wide. Process broadly bilobed ( Fig. 18 ).

Comments. Surdick (1995) provides excellent illustrations of the epiproct of this species. Additional comments are given below.

Figures

Figs. 13-18. Sweltsa resima. 13. Epiproct, dorsal aspect. 14. Epiproct apex, dorsal aspect. 15. Epiproct, anterior aspect. 16. Epiproct, anterior aspect. 17. Epiproct surface detail. 18. Process of tergum 9, anterior aspect. (California, Inyo Co., Division Creek).