S. Mahunka szerk.: Folia Entomologica Hungarica 34/1. (Budapest, 1981)

discrete tubercles). Elytral intervals granulate (usually with two rows of granules), carinate or transversely wrinkled. 2. Genus: Rhyssemus Mulsant, 1842 2 (1) Pronotum without transverse ridges. Elytral intervals essentially smooth. 3 (4) Convex species, usually broader behind. Joints of hind tarsi triangularly widened (Fig. 56). Upper terminal spur of hind tibia remarkably longer than metatarsi (often as long as or longer than first and second tarsal joints together). Hind femur widened (lengthto-width ratio often exceeding 0.5) (= Psammobius auct. ) 1. Genus: Psammodius Fallén. 1807 4 (3) Flat, parallel-sided species. Joints of hind tarsi non-widened. Upper terminal spur of hind tibia about as long as metatarsi. Hind femur not widened 3. Genus: Pleurophorus Mulsant, 1842 1. Genus: Psammodius Fallén, 1807 The genus Psammodius Fallén was recently divided into three subgenera as follows: subgen. Leiopsammodius Rakovic" (species with smooth, non-granulate elytra, without pronotal ridges), subgen. Psammodius s. str. (species with smooth, non-granulate elytra, with five transverse pronotal ridges and furrows between these ridges) and subgen. Granulopsammodius Rakovic (species with granulate elytra, with five transverse pronotal ridges and furrows between them). In the Republic of South Africa and in neighbouring countries, we find only the representatives of the subgen. Leiop sammodius Rakovic. These species posses no pronotal ridges but have vestiges on the lateral parts of the first and/or third transverse furrows running just behind the anterior margin of the pronotum and near the middle of the pronotum, respectively. These vestiges are called lateral impressions in the key to species. It is necessary to note that P. (L.) modestus (Péringuey) is a doubtful species. Its types do not exist and neither me, nor any other specialist has seen any specimen of this animal. Key to Psammodius (Leiopsammodius) species 1 (12) Pronotum with two pairs of lateral impressions (see the note above the key). 2 (3) Longitudinal furrow of pronotum remarkably impressed, extended from basal margin nearly to anterior margin. A small species. Reddish brown. 2.6-2.7 mm. - Rhodesia (endroedii Rakovic. 1979) 3 (2) Longitudinal furrow of pronotum only slightly impressed, present only posteriorly or marked only by a row of punctures. Usually larger species. 4 (9) Granules of head, at least those occurring anteriorly, strongly transversal. 5 (6) Majority of medium-sized or large punctures on pronotum irregularly distributed; pronotal disc remarkably punctate. Reddish brown. 3 mm. - RSA (Cape Province), SWA Namibia subcillatus Harold, 1869 6 (5) Majority of punctures on pronotum arranged along vestigal furrows; pronotal disc at most with few punctures. 7 (8) Granules of head located anteriorly transversal, medial ones rounded. Elytra wider, length-to-width ratio above 1:0.72. Elytral intervals convex. Reddish brown. 2.7-3.1 mir - Seychelles, RSA (S. Kalahari) aeychellensis Rakoviè', 1979 8 (7) All granules of head transversal. Elytral narrower, length-to-width ratio about 1:0.69. Elytral intervals nearly flat. Reddish brown, 2.8-3.3 mm. - RSA (Transvaal, Cape Province), SWA - Namibia evanidus Péringuey, 1901 9 (4) Granules of head rounded, never transversal. 10 (11) Striae on elytral disc, viewed from above, indistinct. Punctures in striae often replaced by large, quite superficial, more or less darkened spots. Reddish brown. 2.5-3 mm. SWA - Namibia substriatus Balthasar, 1943 11 (10) Elytral striae distinct, viewed from above, punctures never quite superficial. Reddish brown. 2.5-3 mm. - Widely distributed in the Oriental and Ethiopian Regions incl. RSA (Transvaal) indicus Harold, 1877 12 (1) Pronotum with only one pair of lateral impressions. Dark brown, elytra paler. 3 mm. RSA (Natal) modestus Péringuey, 1901