S. Mahunka szerk.: Folia Entomologica Hungarica 34/1. (Budapest, 1981)
10 (9) Pronotal transverse ridges (possibly excepting first one) narrower than furrows behind them. 11 (14) Narrower species, elytral length-to-width ratio about 1:0.63. 12 (13) Transverse furrows of pronotum with transverse wrinkles. First pronotal ridge, wider than first pronotal furrow. 4.0-4.2 mm. - SWA - Namibia ESná?*]!?! 8- Petrovitz, 1967 13 (12) Pronotal transverse furrows rather densely transversely punctate. First pronotal ridge at most as wide as first pronotal furrow. 3.3-3.4 mm. - Botswana (seiner! Petrovitz, 1968) 14 (11) Wider species, elytra length-to-width ratio 1:0.65. 15 (16) Large granules in lateral rows on elytral intervals much higher than small granulée in medial rows. 3.2-3.6 mm. - S. Rhodesia, Congo, Sudan, East Africa, San Thome Is., Guinea (c ongolanus Clouët, 1901) 16 (15) Height of granules in lateral rows comparable to that of granules in medial rows. 3,7-3.9 mm. - RSA (Transvaal, Natal), SWA - Namibia africanu s Petrovitz, 1963 Key to Rhyssemus species - Group 3 1 (2) Pronotal ridges low, poorly delimited, all more or less interrupted medially by a longitudinal furrow. 3.2-3.8 mm. - RSA (Cape Province), SWA - Namibia promon torii Péringuey, 1901 2 (1) Pronotal ridges well developed, only fourth and fifth ridges interrupted medially by a longitudinal furrow. 3 (6) First pronotal ridge medially not granulated by ccarss transverse punctures. 4 (5) First and second pronotal furrows with transverse wrinkles, remaining furrows with transverse punctures. 3.0-3.8 mm. - From Egypt to Mosambique (mayeti Clouët, 1901 ) 5 (4) First and second pronotal furrows with transversa punctures, remaining furrown with rounded punctures. 3.6-4.1 mm. - SWA - Namibia mirnus Balthasar, 1961 6 (3) First pronotal ridge granulate medially. 7 (8) All pronotal transverce furrows densely filled with coarse, transverse punctures; medial widths of third transverse ridge and third transverse furrow comparable; third transverse furrow neither impressed nor widened laterally . 3.5-3.8 mm. - LWA - Namibia bechuanuB Petrovitz, 1956 8 (7) Coarse punctures in pronotal furrows rather indistinct and sparsely distributed; third pronotal ridge much wider medially than third transverse furrow (at least by a factor of 3 to 4); third transverse furrow widened and strongly impressed laterally. 3.8 mm. SWA - Namibia rohan j Bénard, 1910 Key to Rhyssemus species - Group 4 1 (2) Pronotal ridges low, poorly delimited. 3.75 mm. - RSA ori spus Ad. Schmidt, 1901 2 (1) Pronotal ridges well developed. 3 (4) Pronotal ridges wider than furrowa. 3.6-4.2 mm. - SWA - Namibia (= casperi Petrovitz, 1965, syn.n.) zumpti Petrovitz, 1956 4 (3) Pronotal ridges narrower than furrows. 3.3 mm. - RSA (Natal) par allelicollis Clouët, 1901 3. Genus: Pleurophorus Mulsant, 1842 In South Africa the genus P leurophoru s Mulsant Is represented only by two species. Key to Pleurophorus species 1 (2) Pronotum posteriorly with a punctate longitudinal furrow (the punctures arranged in a row). Elytral intervals remarkably convex. Kind metatarsi longer than upper terminal spur of hind tibia. 3 mm. - RSA (Cape Province) enpensis Péringuey, 1901 2 (1) Pronotum poeterioi-iy without longitudinal furrow. Elytral intervals nearly flat. Hind metatarsi shorter than upper terminal spur of hind tibia. 3.0-3.75 mm. - RSA (Natal) ratalensio Péringuey, 1901
