Colasposoma subgen. Colasposoma Laporte, 1833

Colasposoma subgen. Colasposoma Laporte, 1833

A key to species of the subgenus Colasposoma from Socotra

1 Claws simple, arcuate; antennomere XI reddish; femora and tibiae clearly bicolored; dorsum with very short and dense pubescence; habitus as in Figs. 115–116 View Figs ; length 5.7–8.9 mm. ................................................................................................. C. ( C.) austerum sp. nov.

– Claws bifid, the inner tooth more or less short; other characters different. ..................... 2

2 Hypomeron shiny, with only a few punctures on margins, bare; dorsum uniformly metallic dark blue, more rarely green; habitus as in Figs. 121–122 View Figs ; length 4.3–5.7 mm. ............... ............................................................................................ C. ( C.) atrocyaneum sp. nov.

– Hypomeron punctured throughout. ................................................................................. 3

3 Punctures of pronotum and elytra more superficial, surface pubescent at least on sides of pronotum and elytra. ........................................................................................................ 5

– Pronotum and elytra with strong and dense punctation, bare. ......................................... 4

4 Dorsum dark, metallic, unicolored; legs reddish, dark, with more or less evident metallic hue; claws bifid in about their midlength, with inner tooth short; habitus as in Figs. 119–120 View Figs ; length 3.6–4.9 mm. .................................................................. C. ( C.) purcharti sp. nov.

– Head and pronotum metallic green, elytra yellowish; legs yellowish; claws appendiculate, shortly divided in about their midlength; habitus as in Figs. 129–130 View Figs ; length 5.0– 5.8 mm. ................................................................................................ C. ( C.) hajeki sp. nov.

5 Elytral punctation fine and superficial, surface nearly bare on elytral disc, with fine pubescence on sides; elytral side ( ♀) with a raised carina going from humerus to apical slope ( Fig. 36 View Figs ); large part of legs reddish; habitus as in Figs. 117–118 View Figs ; length 9.3 mm. ............ .............................................................................................. C. ( C.) unicostatum sp. nov.

– Elytral surface more strongly punctate, pubescent throughout; elytral side with a low, rounded carina, which starts from humeral callus and reaches apical slope ( Fig. 72 View Figs ); a second, shorter carina is near elytral apex; legs metallic. ............................................... 6

6 Punctation in the middle of the frons moderately strong, dense and scarcely confluent; punctures on the pronotal disc more superficial, surface between two punctures usually wider than diameter of a puncture, shiny; elytral pubescence short, uniform, evident; apex of aedeagus as in Fig. 59 View Figs ; habitus as in Figs. 123–124 View Figs ; length 5.5–8.0 mm. ..................... ..................................................................... C. ( C.) brevepilosum brevepilosum sp. nov.

– Punctation in the middle of the frons strong, dense, largely confluent; punctures on the pronotal disc stronger, surface between two punctures narrower than diameter of a puncture; elytral pubescence very short, on the disc scarcely exceeding the depth of the punctures; apex of aedeagus as in Fig. 66 View Figs ; habitus as in Figs. 127–128 View Figs ; length 5.8–6.8 mm. ............ ................................................................... C. ( C.) brevepilosum maritimum subsp. nov.

– Punctation in the middle of the frons strong, dense, largely confluent; punctures on pronotal disc stronger, surface between two punctures narrower than diameter of a puncture; elytral pubescence short, uniform, evident; apex of aedeagus as in Fig. 63 View Figs ; habitus as in Figs. 125–126 View Figs ; length 5.7 mm (J). ............. C. ( C.) brevepilosum orientale subsp. nov.