FIGURES 289–293. Neoperla usambara n in Revision of the African Neoperla Needham, 1905 (Plecoptera: Perlidae: Perlinae) based on morphological and molecular data

FIGURES 289–293. Neoperla usambara n. sp. and N. sambarua n. sp., ♀ ♀. N. usambara: 289, genital situs, vagina and the coiled spermathecal stalk flipped back to expose anchor pattern on S8; 290, egg; 291, detail of striae with a micropyle in a sulcus (full arrow). N. sambarua: 292, genital situs with diagrammatic indication of border between S7/S8; 293, egg, variable thickness of chorion indicated by inner contour on right hand side. Open arrows show divergent spinule bands at entry of SSt into vagina. Scales as indicated. A, anchor; c, collar; co, costa; ls, lateral sclerite; mi, micropyle; mic, micropylar canal; sa, spermatheca; SSt, spermathecal stalk.