Chimarra minima Ulmer, 1907

Blahnik, Roger & Andersen, Trond, 2022, New species of the genus Chimarra Stephens from Africa (Trichoptera, Philopotamidae) and characterization of the African groups and subgroups of the genus, ZooKeys 1111, pp. 43-198 : 43

Chimarra minima Ulmer, 1907

Fig. 30A-F

Chimarrha minima Ulmer, 1907: 43-44, fig. 64.

Chimarra minima Ulmer: Fischer 1961: 66; Gibon 2015: 335, 338, 348, fig. 3C-D (distribution, [table, map]: Togo, Ghana, Ivory Coast, Burkina Faso, Mali, Guniea, Cameroon).

Chimarra petri Gibbs, 1973: 369-371, figs 11-13, 21; Gibon 2015: 335 (as synonym of C. minima Ulmer).

Chimarra voltae Marlier, 1978: 288; Gibon 1985: 23 (as synonoym of C. petri Gibbs).

Material examined.

Ghana - Brong Ahafo Reg. ● 1♂ 1♀; Asubende, River Pru; 8°01'18"N, 1°01'58"W; 25 Nov. 1990; JS Amakye leg.; light trap; ZMBN. - Northern Reg. ● 7♂♂ 4♀♀; Bamboi, Black Volta; 8°08'50"N, 2°02'40"W; 25 Apr. 1991; JS Amakye leg.; light trap; ZMBN ● 1♀; same collection data as for preceding; UMSP ● 1♂; Sabari, Oti River ; 9°17'41"N, 0°14'43"E; 10 Nov. 1993; T Andersen & J Kjærandsen leg.; light trap; ZMBN ● 1♂; same collection data as for preceding; UMSP .

Diagnosis.

Chimarra minima is a very distinctive species, easily diagnosed by the form of the lateral lobes of tergum X, each of which is divided into a dorsal and ventral lobe, each ending in an acute apical projection, that of the dorsal lobe directed upward and that of the lower lobe directed laterally. The form of the inferior appendage is also diagnostic in that the ventral part is relatively projecting and rounded apically, and the dorsal process is relatively basal, prominent, and posteromesally curved, thus forming a C-shaped dorsal projection in apposition to the ventral apex. The paired phallic spines are also unusual in having a distinctly reticulated structure.

Distribution.

Benin, Burkino Faso, Cameroon, Ghana, Guinea, Ivory Coast, Mali, Togo.

Figures

Figure 30. Chimarra minima Ulmer, ♂ genitalia A lateral B dorsal, segments IX and X C inferior appendage, caudal D inferior appendage, dorsal E phallus, lateral F phallus, dorsal.