Trigonopterus Fauvel, 1862

Riedel, Alexander, 2011, The weevil genus Trigonopterus Fauvel (Coleoptera, Curculionidae) and its synonyms — a taxonomic study on the species tied to its genus-group names, Zootaxa 2977, pp. 1-49 : 2-3

Trigonopterus Fauvel, 1862

Type species: Trigonopterus insignis Fauvel , by monotypy

= Trigonus Fauvel 1867: 196 . Unjustified replacement name.

= Idotasia Pascoe, 1871: 203 . Type species: I. nasuta Pascoe , by present designation. = Eurysia Pascoe, 1885: 251 -252. Type species by monotypy: E. fulvicornis Pascoe, 1885 = Mimidotasia Voss, 1960: 328 . Syn.n. Type species by original designation: M. submetallica Voss, 1960: 328 -329. = Microgymnapterus Voss, 1960: 327 . Syn.n. Type species by original designation: M. minutus Voss, 1960: 327 -328.

Diagnosis. Fully apterous genus of Cryptorhynchinae . Length 1.3–6.0 mm. Body usually largely unclothed, without dense vestiture. Rostrum in repose not reaching center of mesocoxa. Scutellum completely absent externally. Mesothoracic receptacle deep, posteriorly closed. Metanepisternum vestigial, externally completely absent. Elytra with 9 striae (sometimes superficially effaced). Femora ventrally sulcate. Tarsi sometimes with articulation of tarsomere 4 deeply incavated; claws small or minute. Metaventrite short, with sharp ridge between meso- and metacoxa. Male genitalia. Ductus ejaculatorius usually internally sclerotised, often with subapical bulb, rarely simple. Female genitalia. Spermatheca narrow, basally with valve, lumen much reduced.