Polydrusus (Eudipnus), C. G. THOMSON, 1859

Yunakov, N. N. & Klass K. D., 2012, Contribution to the taxonomy and nomenclature of Entiminae from the Palaearctic region and South Africa (Coleoptera: Curculionidae), Beiträge Zur Entomologie = Contributions to Entomology 62 (2), pp. 427-445 : 432-433

Subgenus Eudipnus C. G. THOMSON, 1859

[type species: Curculio micans Fabricius, 1792 (= C. mollis Ström, 1768 )]

Eudipnoidius Apfelbeck, 1898 , syn. n.

[type species: Polydrosus sciaphiliformis Apfelbeck, 1898 by monotypy]

Taxonomic notes:

Apfelbeck (1898) erected the subgenus Eudipnoidius for Polydrusus sciaphiliformis solely on the basis that Eudipnoidius has weaker humeral processes on the elytra than Polydrusus , and he suggests Eudipnoidius to be placed in between the genera Sciaphobus (with reduced humeral processes correlated with lack of hind wings) and Polydrusus (with strongly developed humeral processes correlated with complete hind wings). All significant characters traditionally used for discriminating subgenera within Polydrusus (structure and shape of rostrum parts, position and shape of hypostomal-labial sutures and posterior tentorial pit, and also features of leg shape) are identical with Polydrusus (Eudipnus) . We thus synonymise Eudipnoidius with Eudipnus . This is based on examination of one female syntype and one recently collected male of P. sciaphiliformis Apfb. Both specimens are very similar to P. (Eudipnus) lateralis Gyll. , P. (E.) cocciferae Kiesw. and P. (E.) mollis (Ström) in external morphology and genitalia structure of both sexes. P. sciaphiliformis differs from these species only in the shape of the scales of body vestiture and in the shape of the apex of the median lobe, while the internal sac armature and aggonoporium are almost identical.

Type material:

Polydrosus sciaphiliformis : Bulgaria: female, syntype ( MTMB), ‘Sofia, Vitosa pl .’.

Other material examined:

Polydrosus sciaphiliformis : Greece: 1 ♂ ( MTMB), ‘Greece, Trakia, Megalo Dereio, 25.v.2004, S. Ilniczky leg .’ / ‘ Polydrosus sciaphiliformis Apfelbeck, 1898 Yunakov det. 2009’.

Polydrosus lateralis : Greece: 2 ♂♂, 2 ♀♀ ( ZIN) ‘Thrakia’; 1 ♂, 1 ♀ ( ZIN) ‘Attica’.