Neoperla spectabilis, 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 : 21

1 Spermathecal stalk (SSt) U-shaped, the forward-directed base wide, with large folds, the back-curved distal section is smooth, finger-like. Eggs with approximately20 straight to slightly oblique strongly flanged ridges ( Figs. 46–49 ).................................................................................................... 9 N. spectabilis n. sp

1' SSt entirely wide, base directed forward, curving sideward distally. Eggs variable.................................. 2

Figures

FIGURES 42–49. Neoperla spectabilis n. sp. Male paratype from Bioko:42, abdominal tip, dorsal view, tergites 7–9 numbered; 43, artificially everted over-inflated penis; 44, enlarged detail of same. 45, penis of male from Cameroon. Female holotype: 46, vagina and spermathecal stalk, diagrammatical, limit between sternites S7 and S8 indicated; 47, egg; 48, chorion fragment with part of the operculum (op) and the flanged costae (not to scale); 49, detached operculum, top view, same scale as 47. bd, border between operculum and flanged costae; cf, costal flange; op, operculum; ds, dorsal sclerite; sa, spermatheca; sp, spicules; SSt, spermathecal stalk; sw, disto-lateral swelling on penis tube. Arrows indicate hooks with bent tip.