Neoperla sassandrae, 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 : 89

17 Vagina with lateral sclerites, SSt narrow, 2–3 times longer than vagina. Egg costae very narrow, the sulci exceptionally wide. Operculum smooth, no cells or grooves. Caudal brown mark on S9 is a wide truncate triangle narrowly separated from anterior marks on S8 by an oval white window, or a transverse line ( Figs. 217–231 )..................... 40 N. sassandrae n. sp.

17‘ Vagina without lateral sclerites, egg costae and sulci of similar width, or sulci narrrower than costae. S8, SSt and operculum different, variable.................................................................................... 18

Figures

FIGURES 217–221. Neoperla sassandrae n. sp., female genital situs and eggs. For better visibility of patterns on S8 the vagina was flipped back, or a safranin stain was applied. Scales are 200µm, 217–219 same scale, 221 not to scale. A, anchor; c, collar; lscl, lateral vaginal sclerite; sa, spermatheca; SSt, spermathecal stalk; su, sulcus.

FIGURE 222. Neoperla benti n. sp., holotype (NEOP159), genital situs and the only egg, not to scale od, oviduct; SSt, spermathecal stalk; V, vagina.

FIGURES 223–226. Neoperla bipolaris n. sp.: 223, 224, egg, SEM micrograph (from Moore, 1991); 225–226, egg and genital situs of holotype. FIGURES 227–230. Neoperla schuelei n. sp.: 227, female genital situs, paratype; 228–230, egg from holotype; 229, enlarged detail of chorion; 230, oblique view of anchor pole showing the relation between striae and cells on collar. Scale lines are 100µm, unless differently indicated. Arrows indicate micropyles.

FIGURES 231–237. Neoperla nigricauda Navás: 231–234, male fore body, abdominal tip and penis (length 1.18mm), specimens from Cameroon, Etambo r.; 235, everted endophallus of pale ♁ from Kumba. 236, ♀ genital situs, arrow indicates the large spine patch in the vagina); 237, egg (Etambo r.).