Neoperla spectabilis, 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 : 20

3 Subapical patches of external spinules on penis tube, endophallic armature includes large flat triangular spines with re-curved small apical hooklet ( Figs. 42–45 )........................................................ 9 N. spectabilis n. sp.

3' No external spine patches on penis....................................................................... 4

4 Penis and everted endophallus differ in direction ( Figs 12, 15 ) or are sinuous...................................... 5

4' Penis and everted endophallus together are approximately straight or curve in the same direction...................... 6

Figures

FIGURES 42–49. Neoperla spectabilis n. sp. Male paratype from Bioko:42, abdominal tip, dorsal view, tergites 7–9 numbered; 43, artificially everted over-inflated penis; 44, enlarged detail of same. 45, penis of male from Cameroon. Female holotype: 46, vagina and spermathecal stalk, diagrammatical, limit between sternites S7 and S8 indicated; 47, egg; 48, chorion fragment with part of the operculum (op) and the flanged costae (not to scale); 49, detached operculum, top view, same scale as 47. bd, border between operculum and flanged costae; cf, costal flange; op, operculum; ds, dorsal sclerite; sa, spermatheca; sp, spicules; SSt, spermathecal stalk; sw, disto-lateral swelling on penis tube. Arrows indicate hooks with bent tip.

FIGURES 11–15. Males in the N. lujana-complex. N. costata n. sp.: 11, male tergites 7–10, dorsal view; 12, artificially everted penis. N. lujana Navás, artificially everted penes: 13, from Cameroon, Etambo R.; 14, from Bayanga (CAR). 15, N. serrula paratype from Ghana (NEOP009).