Miscellaneous Genera VI
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Platyjionia Hampson

Type species: sada Swinhoe = mediorufa Hampson.

One synonym of the type species of this genus has traditionally been associated with Ugia, but the male antennae are fasciculate, and the forewing marking consists of a medial band, the postmedial border to which meets the costa well basal to the apex. The submarginal markings are barely evident, but are definitely not stepped on the forewing.

The male abdomen has the eighth segment of the framed, corematous type, but the tergite is not strongly modified. The genitalia have the uncus relatively long and slender, and a scaphium is present. The tegumen and vinculum are joined on each side by a pronounced paratergal sclerite. The valves are narrow, rather paddle-like distally, and with a dorsally directed thorn-like process arising from the sacculus centrally and crossing a small lacuna. The valve bases touch, and are associated with an ovate, rugose structure centrally in the diaphragm; a similar structure is seen in Leptocola Gen. n., described next. Structures that appear to be similar are illustrated by Owada (1987) for some herminiines in the related genera Hadennia Moore and Paracolax Hübner. There is a shallow juxta, possibly of the inverted ‘V’ type. The aedeagus is flanked on each side by two or three robust spines on the anellus. In the female, the finely scobinate ostium is set within the eighth segment (see also the Saroba Walker group of genera on p. 336), the seventh being only slightly modified as in Ugia. It leads into a moderate but narrow, sclerotised ductus. The corpus bursae is large, distinctly pyriform, with the ductus seminalis arising from a small appendix in its neck, and with fine, scobinate banding in its distal sphere.

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