Neoperla crenulata, 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 : 130

5 Penis tip bent like a knee, only part of the short endophallus with spines, several form a short crest on the ventral side ( Figs. 423–424 )........................................................................... 74 N. crenulata n. sp.

5' Penis straight, distally annulated, the endophallus differs...................................................... 6

6 Endophallus with a dorsoventral armature of long groups or rows of spines (e.g., Figs. 440 , 445 )...................... 7

6‘ Endophallic armature dominated by basolateral rows of individual spines ( Figs. 482, 484–485 ), dorsal and ventral faces are bare or have only fine spines............................................................................ 9

Figures

FIGURES 422–428. Neoperla crenulata n. sp. Presumed male: 422, abdominal tip; 423, penis; 424, everted endophallus, with enlarged detail. ♀ holotype: 425, genital situs; 426, egg; 427, detail of chorion structure, direct view of surface; 428, same, oblique view of profile. Scales are 100µm in 423–426, 50µm in 427 and 428. Tergites, hemitergite10 and epiproct are labeled. c, collar; n, nail; sa, spermatheca; sc, small cone opposite knee-like bend of penis; SSt, spermathecal stalk; V, vagina.

FIGURES 439–442. Neoperla socia n. sp., from Mutwanga. ♁ paratype (NEOP307): 439, abdominal tip, dorsal view, tergites and hemitergite 10 labeled; 440, penis with everted endophallus and detail of armature at site indicated by white arrow; the yellow arrow points at the annulated penis tip. ♀ paratype (NEOP306): 441, genital situs, sternites 7 and 8 labeled, the spermatheca happens to lie on top of the nail; 442, fragment of an egg with flanged costae; arrow indicates a micropyle in a sulcus. Scales are 100µm, unless differently indicated. n, nail; sa, spermatheca; SSt, spermathecal stalk; V, vagina.

FIGURES 443–449. Neoperla sjostedti sjostedti Klapálek: ♁ from Pretoria: 443, 444, terminal segments in dorsal and lateral views; arrows indicate the low crest in the sclerotised area on T8, tergites, hemitergite 10 and cercus labeled; 445, penis of male from Mbotyi Forest, black arrow points at the rudimentary caecum, open arrows at the location of details; 446, penis, diagammatic, shades are spinose areas. Penes and details of armature to the same scales, respectively. Female from Kenia, Kakamega Rain Forest Reserve: 447, genital situs; 448, egg (not to scale). 449, ♀ Holotype, genital situs. sa, spermatheca; SSt, spermathecal stalk; V, vagina.

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).