Neoperla excisa, Klapalek, Klapalek, 1909

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 : 130

4 T8 with wide, forward-curved process which fits into the excavation of the process on T7 ( Figs. 365 , 388 ). The penis is a hard narrow long tube, the long narrow endophallus with fine short armature ( Fig. 368 )................. 64 N. excisa Klapálek

4‘ Process of T8 narrow, pointed, standing erect behind the bilobed projection on T7. Penis soft and short, endophallus with sharp spreading spines ( Figs. 486–489 )............................................................. 83 N. sp. Afr_A

Figures

FIGURES 365–372. Neoperla excisa Klapálek: 365, ♁ lectotype, dorsal view of abdominal tip (from Klapálek 1923b); 366, abdominal tip of ♁ from Bumbuna, Sierra Leone, tergites and HT10 labeled; 367, handsketch of hemitergites and abdominal tip (lateral view) of the actual lectotype specimen, drawn in 1973; 368, penis, ♁ from Makokou, Gaboon; 369, 370, genital situs and egg of ♀ from Walikale; 371, egg from Odzala N. P.; 372, chorion of Guinean specimen (NEOP236). Scales are 100µm, except 50µm in Fig. 372. a, anchor; n, nail; sa, spermatheca; SSt, spermathecal stalk.

FIGURES 386–390. Neoperla sorella n. sp.: 386, 387, male holotype, abdominal tip and everted penis; 388–390, female paratype, genital situs and egg (with enlarged detail of 2 merging striae) from Bolonzo. Scales are 100µm, unless differently labelled. FIGURES 391–393. Neoperla simplex n. sp., ♀: 391, 392 genital, situs and egg of paratype from Sankuru; 393, operculum of egg of holotype from Yangambi. Figs 391 and 393 not to scale. a, anchor; mi, micropyle; n, nail; od, oviduct; sa, spermatheca; SSt, spermathecal stalk.

FIGURES 486–489. Neoperla sp. Afr_A: male abdominal tip of the only specimen, in dorsal view when still untreated (486) and in lateral view (487), after clearing which made the processes on T7 and T8 spread and diverge; blue lines connect identical structures in the 2 views. 488, the burst penis with the partly everted endophallus; 489, the same, enlarged. Scales are 100µm, terhites, hemitergite 10, cercus and epiproct are labeled. FIGURE 490. Egg of Neoperla sp. Afr_B (from Kalonge); the scale is 100µm long.