Alloperla natchez Surdick & Stark

Overview & Synopsis

Alloperla natchez Surdick & Stark (Figs. 25-30) Alloperla natchez Surdick & Stark, 1980:71. Holotype ♂ (United States National Museum), Little Sand Creek, Natchez Trace Parkway, Claiborne Co., Mississippi Alloperla natchez: Brown & Stark, 1995:122. Description of nymph and egg Alloperla natchez: Hardy et al., 1994:368. Distribution Alloperla natchez: Surdick, 2004:18. Redescription Material examined. MS: Claiborne Co., Ragsdale Creek, Regan Rd, 17 April 1993, B. Stark, 9 ♂, 7 ♀ (BPS). Franklin Co., Mill Branch, Homochitto National Forest, 14 May 1993, N. Phiefer, 2 ♂, 19 ♀ (BPS). Franklin Co., tributary of Porter Creek, 13 April 1993, C. Hardy, C. Boll, 9 ♂, 6 ♀ (BPS). Smith Co., Clear Creek, 3 mi SW Mize, 24 April 1991, B. Stark, D. Tanner, 1 ♂, 5 ♀ (BPS). Epiproct. Length from base to fork, ca. 101 μm. Greatest pre-apical width, ca. 28 μm; apical width, ca. 27 μm. Cowl reaching almost to base of epiproct fork (Figs. 25-26). Epiproct dorsum completely bare (Figs. 27, 30), but apical third armed with irregular lateral rows of large, ventrolaterally directed setae (Figs. 26- 29). Width relatively uniform from base to beyond midlength, but gradually narrowed in apical third to base of fork (Figs. 26-27). Arms of fork project downward in lateral and frontal aspects (Figs. 28-29).