Neoperla tangana, 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 : 131

445).................................................................... 78B N. sjostedti sjostedti Klapálek 9 Top of T8-process wide, rounded or truncate ( Figs. 477, 479, 481 ), even slightly concave under certain angles of view. Base of endophallus on each side with a short row of rapidly decreasing sharp teeth, distal part of endophallus consisting of long folded membranes without distinct armature.................................................. 82 N. leroiana Klapálek 9' Contour of T8-process triangular, top more or less pointed (Figs. 432,461), endophallus variable..................... 10 10 Endophallus (observed only by transparency) little longer than the penis, two orderly lateral rows of stout conical teeth of uniform size occupy the basal 2/3 ( Figs. 434–435 ), no other armature present...................... 76 N. tangana n. sp. 10' Endophallus much longer than the penis tube, endophallus base on each side with an orderly row of individual large teeth which distally decrease rapidly in size......................................................................... 11 11 Basolateral rows of endophallic teeth continue for a considerable distance, much smaller teeth stand between them ( Figs. 460,

Figures

FIGURES 477–485. Male Neoperla leroiana and N. dundoana: N. leroiana Klapálek: 477, 478, abdominal tip of lectotype in dorsal and lateral views (modified from Klapálek 1911); 479, 480, the same of a Ghanaan specimen (modified from Zwick 1973a); 481, tip of T8-process of another Ghanaan specimen; 482, penis with largely everted endophallus, ♁ from Togo, Tététou; 483, intentionally broken penis of another ♁ from Tététou showing details of endophallus, with enlarged detail; 484, endophallus base of ♁ from Ghana, R. Menu (NEOP277). 485, N. dundoana, endophallus base of ♁ from Dundo (NEOP267).

FIGURES 432–438. Neoperla tangana n. sp.: 432, 433, ♁ abdominal tip, segments, hemitergite 10, cercus and epiproct labeled, not to scale; 434, penis (holotype, NEOP300); 435, distal half of penis (paratype, NEOP301); 436, ♀ genital situs; 437, egg; 438, detail of chorion. Scales are 100µm, unless differently labeled. co, common oviduct; D, debris, dirt; sa, spermatheca; SSt, spermathecal stalk; V, vagina.

FIGURES 459–465. Neoperla arambourgana Navás: ♁ lectotype: 459, diagrammatic dorsal and lateral views of abdominal tip, tergites, hemitergite 10 and cercus labeled; 460: distal half of penis. 461, process on T8 of ♁ from Rutshuru, D. R. Congo, diagrammatic; 462, endophallus of ♁ from Walikale, D. R.Congo.♀ genital situs:463, riv. Eulya, nr Kamituga, D. R. Congo; 464, Urwald Mawambi, D. R. Congo; 465, from Kama, D. R. Congo. Scales are 100µm, unless differently labeled; sa, spermatheca; SSt., spermathecal stalk; V, vagina.