Neoperla sambarua, 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 : 89

8‘ Egg subspherical, not striate ( Figs. 292–293 ).............................................. 51 N. sambarua n. sp.

9 Front of S8 with 2 narrowly separated sclerotised plates. SSt many times longer than vagina......................... 10

9‘ S8 different, SSt much shorter, variable, at most 5 times longer than vagina...................................... 11

Figures

FIGURES 289–293. Neoperla usambara n. sp. and N. sambarua n. sp., ♀ ♀. N. usambara: 289, genital situs, vagina and the coiled spermathecal stalk flipped back to expose anchor pattern on S8; 290, egg; 291, detail of striae with a micropyle in a sulcus (full arrow). N. sambarua: 292, genital situs with diagrammatic indication of border between S7/S8; 293, egg, variable thickness of chorion indicated by inner contour on right hand side. Open arrows show divergent spinule bands at entry of SSt into vagina. Scales as indicated. A, anchor; c, collar; co, costa; ls, lateral sclerite; mi, micropyle; mic, micropylar canal; sa, spermatheca; SSt, spermathecal stalk.