Aprionus angulatus, Mamaev, 1963

Jaschhof, Mathias & Jaschhof, Catrin, 2017, New species of Aprionus (Diptera, Cecidomyiidae, Micromyinae) from Sweden and other parts of the Palearctic region, European Journal of Taxonomy 378, pp. 1-38 : 3

The angulatus group

The angulatus group (eponym is Aprionus angulatus Mamaev, 1963 ) gathers species with the following male genitalic characters: the tegmen, which is made up of two lateral pillars with recurved apices, lacks finger-like processes; the gonocoxites are provided with a cone-shaped apodeme ventrobasally and subtriangular lobes ventroposteriorly; the ninth tergite usually has weakly sclerotized windows next to strongly sclerotized braces; and a subanal plate is usually absent ( Jaschhof & Jaschhof 2009: 223). The six previously known species were treated in detail by Jaschhof & Jaschhof (2009). One species from Scandinavia and two species from Japan are newly described here. One of our Japanese species is exceptional in possessing a subanal plate.