Cheumatopsyche camerunica Oláh & Johanson, 2008

Oláh, János, Johanson, Kjell Arne & Barnard, Peter C., 2008, Revision of the Oriental and Afrotropical species of Cheumatopsyche Wallengren (Hydropsychidae, Trichoptera), Zootaxa 1738, pp. 1-171 : 20-22

Cheumatopsyche camerunica Oláh & Johanson , new species

Fig. 51–54

Male. Pale brown (in alcohol). Spurs 1,4,4. Membrane of forewings griseous with fuscous setae and without distinct pattern. Hind wing fork distinct.

Male genitalia. Segment IX broad laterally; tergum about half as long as sternum ( Fig. 51); anterior margins allipsoid; apicolateral lobes on posterior margins bluntly triangular, located at mid-height of segment well dorsally of coxopodite bases ( Fig. 51); posterior spine row interrupted at tergum X. Segment X long, slightly narrowing distally; dorsal margin nearly straight in lateral view ( Fig. 51). Apicoventral setal lobes geniculate basally ( Fig. 51), distally directing dorsad; narrowing apicad and slightly curving mesad in dorsal view ( Fig. 52); with distinct subapical wart clearly visible in lateral and dorsal view ( Fig. 51, 52). Pair of lateral setose areas located at dorsal base of apicoventral setal lobes ( Fig. 51). Transverse and longitudinal sutures well-developed. Segment X tripartite due to presence of triangularly producing setaless mesal lobe ( Fig. 52). Coxopodites with parallel-sided in lateral view ( Fig. 51); narrowing towards midlength before dilating apicad in ventral view ( Fig. 51), apices curving posteromesad ( Fig. 51, 53). Harpagones short, with broad bases, abruptly narrowing to slender, tapering process in lateral view ( Fig. 51); in ventral view sharply triangular along their lengths ( Fig. 53). Phallic apparatus ( Fig. 54) with short, shallowly rounded phallobase; phallotheca straight, almost parallel-sided, narrowing at about mid-length; endothecal processes long, ovoid; phallotremal sclerites sclerotised, oriented ventrad, ventral half visible below ventral margin of endothecal processes.

Holotype male: CAMEROON: Ekona , at light, 22.iv.1938 [H. Buhr] ( ZMHB, in alcohol).

Distribution: Cameroon.

Etymology: named after the type locality, Cameroon.

Remarks: This is the one of two African Cheumatopsyche species having only single protibial spurs. The other species, C. unicalcarata Mey, 1992 , was described from Kenya. Cheumatopsyche camerunica is similar to the widespread C. afra ( Mosely, 1935) and especially to C. sexfasciata described from Cameroon, both species being in the Cheumatopsyche dubitans species group. Cheumatopsyche camerunica is distinguished in the forewings which have no pattern. The dorsum of segment X is convex, its wide excision on the apex of segment X is bipartite, separated by a distinct triangular central lobe visible in dorsal view; as a result the base of the excision is not straight or concave. The lateral lobe of segment X is armed with an unusual subapical setal wart. In addition, both hind wings have well developed fork I.