Coptus, Wollaston, 1873

Davis, Steven R., 2017, Coptus Wollaston (Coleoptera: Curculionidae: Cossoninae): A genus new to China with descriptions of two new species, Zootaxa 4312 (2), pp. 381-393 : 382-383

Key to the species of Coptus in the Palearctic and Oriental regions

1 Rostrum with median black stripe on basal half; rostrum gradually widening from base to apex; scrobe half the length of ros-

trum; scape exceeding hind margin of eye; pronotal apical constriction not continued across disk, stria 10 reaching apex; length 2.5 mm. (Anamalai Hills) South India.................................................. C. anamalainus Marshall - Rostrum without median black stripe on basal half, parallel sided (in female), widened at apex (in male)................. 2

2 Eyes convex; pronotum oblong, sparsely punctured, with fine abbreviated median carina; elytra coarsely punctate-striate, intervals subcostate; striae as broad as intervals; length 3.5 mm. India............................ C. subcarinatus Faust

- Eyes strongly prominent; pronotum oval, slightly constricted at apex, deeply punctured; without any carina..............3

3 Foreleg without small triangular projection at inner subapical margin of tibia; rostrum short, broad, parallel, arched, with small punctures; eyes large; elytra punctate-striate; length 1.33 mm. Indonesia......................... C. oculatus Wollaston

- Foreleg with small triangular projection at inner subapical margin of tibia.........................................4 4 Average body length 4.2 mm (including rostrum); rostrum short, slightly widened near mandibles, with shallow wide oblong depression along base of basal half; antennal scrobe located along basal 1/2 of rostrum, reaching anterior margin of eye; point of antennal insertion at base of rostrum; scape touching posterior margin of eye; eyes strongly convex, with coarse convex facets; elytral intervals flat. (Yunnan Province) southern China.................... C. brevirostris Omar and Zhang sp. nov.

- Average body length 5.0 mm (including rostrum); rostrum moderately long, with short median elliptical sulcus at point of antennal insertion; antennal scrobe along basal 2/3 of rostrum, extending to just before anterior margin of eye; point of antennal insertion at basal 1/3 of rostrum; scape slightly passing posterior margin of eye; eyes slightly convex, with smooth fine convex facets; intervals slightly convex. (Yunnan Province) southern China.......... C. vitreous Omar and Zhang sp. nov.