Microstemmatodes occidentalis (Villiers, 1973)

(Figs. 3E, F)

Material examined: LIBERIA: Bong county, trip Liberia Research Unit (Bong Mine)— Dam 12, 21.iv.1989, 6:23– 6:36 pm, vehicle-mounted net, leg. Rolf Garms (1 ♀); Trip Bong town—Menla, Men creek, 6°48′N 10°21′W, 11.v.1989, vehicle-mounted net, leg. Rolf Garms (1 ♂) .

Distribution: New for Liberia. Guinea, Ivory Coast.

Remark: The first demonstration of the male paramere (Fig. 3F) in comparison with that of M. atrocyanea (Signoret, 1858) (Fig. 3H) herewith confirms separate species status. The paramere’s stem is narrower, the apical process in a curvate angle instead of a rather sharp bend. Originally a monotypic genus, the five presently known species were keyed in Villiers (1973).

Nagusta sp. near N. carayoni Villiers, 1949

(Fig. 4A)

Material examined: LIBERIA: Bong county, BM tailings pond area, Dam 12, 6°46′15″N 10°18′33″W, 29.– 30.v.1989, at light, leg. Rolf Garms (1 ♀) .

Distribution: New for Liberia. Cameroon, Ghana, Guinea.

Remark: The diversity of the predominantly Afrotropical genus has rapidly grown from four species (Bergroth, 1907) to eight (Villiers, 1949b), and eventually to 28 (Villiers, 1967). Using and combining the available keys (Bergroth, 1907; Villiers, 1949b, 1951, 1967) this specimen matches N. carayoni . However, there are the following differences: tubercles on posterior lobe of pronotum rather high, at their base wider than space between them; first antennal segment apically not particularly reddish. The Liberian specimen shows also some resemblance with N. saegeri (Villiers, 1964), but the latter bears a laterally dilated connexivum, which is not present in N. carayoni .