Neoperla beta, 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

3‘ Penis tube without apical sclerites and without dorsodistal spines. The everted penis resembles a carrot or a bete with gradually reduced diameter and a short conical tip ( Fig. 212 )............................................... 39 N. beta n. sp.

4 Process of T7 about as long as the segment itself, extending over T8 and almost to T9. Endophalllus dorsally with several regular saw-like lines of spines.......................................................................... 5

4‘ Process of T7 shorter, T8 variable, endophallus variable, never with saw-like spine lines............................. 6

Figures

FIGURES 209–212. Neoperla burgeoni Navás, everted penes: 209, ♁ from Ghana, modified from Zwick (1973), endophallus fully everted; 210, ♁ from Guinea, Simbareya, endophallus incompletely everted; 211, ♁ from Cameroon, Garua, the slender penis (base not shown, light safranin stain) with long, bare distal part of endophallus. FIGURE 212. Neoperla beta n. sp., holotype ♁ (Senegal, Gambia r. at Samédouta), everted penis (NEOP200). Figures 209–212 to similar scales.