Chlaenius (Chlaeniostenus) silvai n. sp.

Figure 2

Type material. Holotype male: “Bissor„\ 16.XI.1983 \ SPEN Nº 197”\\ “ A. Serrano leg.” \\ “Miss. Ent. SPEN\ à Guiné-Bissau \ 16Nov a 7Dez83 ”\\ “ Chlaenius \ ( Chlaeniostenus) \ anthracoderus \ (Laferté) \ Det. A. Serrano, 2003 \\ “Holotype male\ Chlaenius \ ( Chlaeniostenus) \ silvai n. sp. \ A. Serrano det. 2023 [t] [h] [red card] .

Differential diagnosis: Head bright metallic green, pronotum bright green laterally, coppery in the centre, elytra silky green-copperish matte (except a lateral yellow band). Labrum, palpi, antennae and legs (except coxae that are blackish) yellow-reddish; distal half of mandibles dark brown; head almost smooth, surface of pronotum microreticulate, with scattered punctures; elytra microreticulate, lateral yellowish band reaching the 7 th stria, broader posteriad; aedeagus (Figs 2c–e)