Neoperla duodeviginti, 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 : 88

10‘ HT10 longer, angularly bent, tip blunt. Penis waisted, no external spines. Endophallus straight, conical, the wide base with fine spines around a bare center. In the narrow distal part, spines stand in lines ( Figs. 76–82 ).......... 1 6 N . duodeviginti n. sp.

11 Strong external spines on penis tube form distinct patches or bands............................................. 12

11‘ No macroscopic spines on outside of penis, dorsal side may bear microscopic asperities............................ 13

Figures

FIGURES 76–82. Neoperla duodeviginti n. sp.: 76–78, ♁ abdominal tip and contracted penis, specimen from Bui Camp, Ghana (not to scale, tergites and HT10 labeled; modified from Zwick, 1973b); 79, penis with everted endophallus, specimen from Ghana, river Mensu; 80, endophallus of holotype (NEOP048) from Cameroon; 81, 82, genital situs and egg, ♀ from Belefuanai. Scales are 100µm unless differently indicated. a, anchor; c, collar: od, oviduct; sa, spermatheca; SSt, spermathecal stalk; V, vagina.