Neoperla angolana, 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 : 18

6 SSt a semicircular tube which is much longer than the vagina and has only a narrow seam of scales along the convex periphery. Egg a slender ovoid with numerous punctate flat striae, operculum conical ( Figs. 66–68 )............ 13 N. angolana n. sp.

6' SSt different and not significantly longer than the vagina, egg different........................................... 7

Figures

FIGURES 63–68. Neoperla angolana n. sp.: 63, abdominal tip of ♁ paratype, dorsal, tergites numbered, not to scale; 64, partly everted penis; 65, endophallus of same. 66, genital situs of ♀ holotype, with enlarged detail, diagrammatic; 67, egg; 68, detail of chorion structure. Scales as indicated. ce, cercus; co, common oviduct; E, epiproct; sa, spermatheca; SSt, spermathecal stalk; V, vagina.