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

'13 (4) Elytra either with more or less than 10 striae. 14 (15) Elytra with 9 striae. Surface setose. Genae produced beyond eyes. Front without tubercle. Basis of pronotum without or with indistinct border. Scutellum narrow, triangular. Both lateral striae of elytra connected at about the middle, only eight reaching the apex. Anterior tibiae tridentate. Hind metatarsi much longer than upper thorn of hind tibiae and longer than next three joints together. 5-6 mm 6. Genus: Neoheptaulacus Paulian, 1943 15 (14) Elytra with 12-20 striae. Frontal suture raised, without tubercle. Genae strongly produced beyond eyes. Basis of pronotum bordered. Elytra with a denticle on each shoulder. Pygidium not entirely covered by elytra. Abdominal segments united. Bristles on apical margin of hind tibiae unequal (Fig. 14). 3-7 mm (= Odontaphodius Schmidt, 1907) 7. Genus: Harmogaster Harold, 1861 16 (3) Intervals carinated, all ribs reaching basis of elytra, also on the sides. Basis of pronotum with bristles. Genae produced. Front without tubercles. Pronotum with or without longitudinal furrow. Anterior tibiae normal, with three teeth. Hind tarsi short, strongly dilated (Fig. 15). 4-5.5 mm 8. Genus: Oxyomus Stephens, 1839 17 (2) Inside of anterior tibiae in males dilated at about the middle, or angulated before apex, 18 (19) Inside of anterior tibiae in males obtusely angulated before apex, apical tooth strongly prolonged and truncated on apex, apical thorn absent (Fig. 16); anterior tibiae in females normal. Surface setose or bare. Genae small, rounded, eyes scarcely visible from above. Front without tubercle. Pronotum contracted backwards, basis either bordered or not, hind angles either emarginated or not. Intervals of elytra flat or convex. Apical bristles of posterior tibiae unequal. 3-5 mm 9. Genus: Coptochirus Harold, 1859 19 (18) Inside of anterior tibiae in males dilated about in anterior half (Fig. 17), 20 (21) Pronotum contracted backward. Anterior tibiae tridentate. Elytra either setose or not. Clypeus deeply emarginate, genae produced beyond eyes. Hind angles of pronotum truncated or emarginated, basis bordered, with bristles. Elytra with broad striae and narrow ribs. Hind metatarsi falciform (Fig. 18). 3-5 mm 10. Genus: Drepanocanthus Péringuey, 1901 21 (22) Pronotum not contracted to basis. Anterior tibiae in males curved inward with two teeth on outer side, basal one small, apical one bidentate, apical thorn at about the middle placed inside. Clypeus shallowly emarginate, genae strongly produced beyond eyes. 5.5 mm 11. Genus: Harmodactylus Péringuey, 1901 22 (1) Epipleura broad and not placed ventrally (Fig. 19). 23 ÇA) Elytra with 10 sharp ribs, epipleura broad, vertical, abruptly narrowed to apex. Clypeus emarginate, genae produced, front with indistinct carina. Sides and basis of pronotum with rather sparse and long setae, hind angles broadly rounded, basis indistinctly bordered, surface pale, densely punctate* Anterior tibiae normal, tridentate, hind tibiae not strongly dilated' to apex, apical bristles very short, but not all of equal length. Hind metatarsi shorter than the upper thorn, about as long as next two joints together, claws very small. 3-4 mm 12. Genus: Pseudoxyomus Petrovitz, 1962 24 (23) Intervals of elytra flat or weakly convex. 25 (26) Pygidium free, not covered by elytra. Clypeus rounded, apex slightly emarginate. Genae not produced beyond eyes. Front without tubercle, sutiye very fine. Pronotum broadest at about the middle, sides curved, basis without border, surface rather densely punctate, punctures unequal. Elytra with 10 punctured striae, Intervals lightly convex, apices broadly rounded. Anterior tibiae tridentate, teeth In males near to each other, apical thorn very big, anterior tibiae in female normal. Middle tarsi in males strongly thickened, outer claw shell-shaped, in female both claws simple. 3.5-4 mm 13. Genus: Macroretrus Péringuey, 1908 26 (25~) Pygidium covered by elytra, or other characters different from above. 27 £8 ) Surface setose, oily, yellowish to dark brown, elytra often with darker marking. Front without tubercle, genae produced. Antennae 9-jointed. Basis of pronotum without border. Elytra with punctate striae. Anterior tibiae tridentate. Apical bristles of hind tibiae unequal. 1.5-7 mm 14. Genus: LorditomaeuB Péringuey, 1901 28 (27) Surface bare, shining, mostly yellow. Body ílat. Head with à strong knob. Genae produced. Pronotum with various unevennesses. Scutellum very narrow. Elytra with three or four ribs, intervals flat. Anterior tibiae tridentate, both apical teeth often united. 7 mm 15. Genus: Sybax Boheman, 1857