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 : 17

10 Process of T7 relatively long and blunt-tipped, in side view raised obliquely over a strong hump on T8, HT10-process angularly bent. Penis tube and endophallus of similar length, endophallus almost straight, armature not densely packed, ventral face largely bare, dorsodistally a few short spine rows are present ( Figs. 76–80 )..................... 16 N. duodeviginti n. sp.

10' Process of T7 is a pyramidal cone, sclerite on T8 variably elevated, HT10 curved................................. 11

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.