Tribe Coprini Leach, 1815

Coprides Leach, 1815, Edinburgh Encyclopaedia, 9(1): 96 (Type genus: Copris Geoffroy, 1762).

Coptodactylini Janssens, 1946, Mém. Mus. R. Hist. Nat. Belg., 22: 13 (original spelling as Coptodactylides, type genus: Coptodactyla Burmeister, 1846).

Key to genera of Coprini from Hong Kong.

1 Elytra with 2 lateral carinae ............................................................................................................................. Catharsius Hope, 1837 Elytra with 1 lateral carina ................................................................................................................................................................... 2

2 Small sized, moderately convex, black and shiny, sometimes with weak metallic sheen; sexual dimorphism weak; ventral side of pronotum with deep and marginated antennal groove............................................................................. Microcopris Balthasar, 1958 Medium or moderately small sized, strongly convex or flat, shiny or not, without metallic sheen; sexual dimorphism conspicuous; ventral side of pronotum with shallow and non-marginated antennal groove ...................................................................................... 3

3 Body weakly convex, grey, brown or rarely black, not shiny; legs slender; meso- and metatarsi slightly curved; pronotum without horn, longitudinal groove lacking or very weak; outer margin of protibia with 4 teeth; clypeus smooth in the middle......................... ................................................................................................................................................................. Paracopris Balthasar, 1939 Body strongly convex, black and shiny; legs strong; pronotum with horn(s), longitudinal groove conspicuous; outer margin of protibia with 3 or 4 teeth; clypeus smooth in the middle or with punctures ................................................................... Copris Geoffroy, 1762