Neoperla spironema, Zwick & Zwick, 2023

Zwick, Peter & Zwick, Andreas, 2023, Revision of the African Neoperla Needham, 1905 (Plecoptera: Perlidae: Perlinae) based on morphological and molecular data, Zootaxa 5316 (1), pp. 1-194 : 131-132

13' The micropyles are located on top of narrow supplementary costae ( Fig. 312 )................... 54 N. spironema n. sp.

14 S8 caudally with a short subgenital plate, or a projecting nail, or a sclerite resembling a fingernail.................... 15

14' S8 not distinctly modified, the SSt is of uniform width, approximately1.5-2* longer than the vagina................... 22

Figures

FIGURES 309–312. Neoperla spironema n. sp.: 309, 310, holotype; 311, a paratype; both from Ankasa Game. Res; 312, SEMdetail of chorion with the 2 kinds of costae and a micropyle (Ivory Coast, USNM; from Moore, 1991). Scales are 100µm, or as indicated. mi, micropyle; sa, spermatheca; SSt, spermathecal stalk; V, vagina.