Anthomyza robusta, Roháček, 2020

Roháček, Jindřich, 2020, Anthomyzidae (Diptera) of Taiwan: new species but no new records, Acta Entomologica Musei Nationalis Pragae 60 (1), pp. 269-290 : 272

The Anthomyza bellatrix group

The group was first delimited by RƟIJǍěൾĸ (2006: 171) and characterized by the following synapomorphies: head with a pair of whitish grey microtomentose stripes on occiput; thoracic macrosetae long but thin; scutellum dorsally flattened; male f3 with a row of shortened thickened posteroventral setae; basal fork of phallapodeme strongly asymmetrical; aedeagal part of folding apparatus with robust internal spines; filum of distiphallus with conspicuously dilated apex having 2 or 3 projections; ejacapodeme strongly reduced; female tergosternum T7+S7 dorsally short; female S8 shortened; internal sclerites of female genital chamber (comprising 2 pairs of posterior sclerites and 1 annular sclerite) complex and more or less asymmetrical, with annular sclerite elongate. All previous phylogenetical hypotheses (morphological – RƟIJǍěൾĸ 2009: fig. 141; RƟIJǍěൾĸ & BARƂൾR 2016: fig. 605; molecular – RƟIJǍěൾĸ & TóŦIJƟඏǍ 2014: fig. 1; RƟIJǍěൾĸ et al. 2019: figs 2, 4) recognized A. bellatrix group as distinct monophyletic lineage but its relationships to other groups of Anthomyza remains to be resolved (cf. RƟIJǍěൾĸ et al. 2019). The group seems to be restricted to eastern Asia and includes the following species: A. cuneata Roháček, 1987 ( Nepal, China, most ancestral species), A. bellatrix Roháček, 1984 ( North Korea, Japan, Russia: Kuril Is.), A. trifurca Sueyoshi & Roháček, 2003 ( China, North Korea, South Korea, Japan) and A. robusta sp. nov. (Taiwan) described below.