Chetoneura Colless, 1962

Ševčík, Jan, 2012, Pseudochetoneura gen. nov., a peculiar new genus from Ecuador, with notes on Chetoneura (Diptera: Keroplatidae), Acta Entomologica Musei Nationalis Pragae 52 (1), pp. 281-288 : 284

Chetoneura Colless, 1962

Chetoneura Colless, 1962: 437 . = Bisubcosta Papp, 2006 in PAPP et al. (2006: 129), syn. nov.

An emended diagnosis of Chetoneura was provided by AMORIM et al. (2008) who also briefly discussed its phylogenetic position and described the larva. At least four important diagnostic characters should be added: subcosta apically forked; mediotergite strongly convex; tibial setae arranged in regular longitudinal rows; and male terminalia with gonocoxites ventrobasally fused, forming U-shaped medioventral excavation, covered with distinct setae on its sides.

The recently described genus Bisubcosta Papp, 2006 is considered here to be a junior synonym of Chetoneura , which thus now includes three species, Ch. cavernae Colless, 1962 ( Thailand, Malaysia and Brunei), Ch. oligoradiata ( Papp, 2006) comb. nov. ( Thailand) and Ch. shennonggongensis Amorim & Niu, 2008 ( China) . Comparison is given below of the former two species, of which material is available to the author. Apparently, Ch. oligoradiata and Ch. shennonggongensis are more similar to each other than to Ch. cavernae , sharing the same wing venation, whitish mediotergite, and short, triangular tergite 9. All the three species are, however, so similar in many characters, including the male terminalia, that further division into separate genera is considered unjustified.