Ischnopterapion Bokor, 1923

Morris, Michael G., Sw, London & Dt, Dorset, 2011, The Apionidae (Coleoptera) of the Canary Islands, with particular reference to the contribution of T. Vernon Wollaston, Acta Entomologica Musei Nationalis Pragae 51 (1), pp. 157-182 : 165

Ischnopterapion Bokor, 1923

1 Body very sparsely pubescent, almost glabrous, shining, blue-black or greenish-black; pronotum remotely and shallowly punctured; average size smaller 1.6–2.1 mm; on Trifolium . .......................................... I. (Chlorapion Györffy, 1956) virens (Herbst, 1797) .

Male rostrum shorter and less strongly curved, only a little longer than pronotum.

Female rostrum longer and more strongly curved, as long as, or longer than, head and pronotum combined.

– Body moderately pubescent; pronotum closely, but rather shallowly, punctured; average size larger 1.7–2.2 mm; on Lotus . Ischnopterapion s. str............................................. 2 2 Pronotum less strongly transverse, about 0.9× as long as broad; elytra 1.35–1.40× as long as broad; slightly less brightly shining. ........ I. (I.) plumbeomicans (Rosenhauer, 1856)

Sexual differences not marked. Male rostrum only slightly longer than head and pronotum combined, antennae inserted nearer middle. Female rostrum more evidently longer than head and pronotum combined, antennae inserted a little nearer base.

– Pronotum more strongly transverse, about 0.8; elytra about 1.25× as long as broad, slightly more brightly shining. ........................................................................ I. (I.) sp. ( Fig. 14 )

Sexual differences not marked, as in I. (I.) plumbeomicans .

Figures

Figs. 13–14. Habitus of the Apionidae of Canary Islands. 13 – Catapion austrinum (Wollaston, 1864), holotype, Wollaston Coll. (BMNH); 14 – Ischnopterapion sp., author’s Coll.