Boradiopsis Hering

Type species: grisea Semper, Philippines (Luzon).

The Sundanian species included in this genus are those recognised by Yen et al. (2005) to be misplaced in Anarbudas Jordan (type species insignis Jordan, Hainan and associated with the Wallacea + New Guinea subclade of Clade 18). G.M. Tarmann (pers. comm.) has examined the type material of Boradiopsis grisea (in SMFL, Frankfurt) and indicates that it shares sufficient features with these species misplaced in Anarbudas that they should be regarded as congeneric. Boradiopsis is also placed in this subclade of Clade 18, though it is not closely associated with bipartita Walker, the representative of the Sundanian group.

The forewing in both sexes (only the female of bipartita has been seen: the illustration in Endo & Kishida (1999), showing it to be significantly larger than the male but similarly patterned) resemble those of the female of Prosopandrophila distincta, having a yellowish fawn ground colour broken by patches of dark grey in the spaces between the veins. The ground colour also forms transverse antemedial, postmedial and submarginal bands that break up the grey patches into a somewhat chequered arrangement. In P. distincta there is only one fascia in the distal half of the wing. The antemedial in both genera is broader, but more irregularly so in Boradiopsis. The hindwings of Boradiopsis are yellow with a dark grey border that is broadest apically, tapering away to nothing at the tornus and on the costa.

The male abdomen has features that place it amongst the more distal clades in the analysis of Yen et al. (2005) such as a modified eighth segment and a highly sinuous aedeagus that has a central hump. The genitalia are generally typical of the Chalcosiini with a broad, bilobed uncus, simple (but here strongly divided) valves and a well developed saccus. The division of the valves is almost complete.

The female genitalia have not been examined for this study, though the character matrix of Yen et al. (2005) includes such data for both grisea and bipartita.

The genus is restricted to the Philippines and Sundaland and is richest in Borneo where all four species occur, recorded from various forest types in the lowlands.