Alophogaster Hampson

Type species: rubribasis Hampson, N.E. Himalaya.

This genus was retained as distinct by Jordan (1907). The type species, ludius Jordan (Tonkin) and probably melli Hering (China) all have wings clouded with red and black in an irregular longitudinal manner (there is a basal zone of rusty red in rubribasis, also extensive on the thorax). In the more translucent hindwing, CuA2 converges on CuP but is still separate at the margin. All forewing veins arise independently from the cell.

The male abdomen of the type species lacks the conspicuous pair of hair-pencils seen in Phauda on the membrane between the eighth segment and the genitalia, but the sternite has a slender apodeme centrally as in that genus. The genitalia (Fig 15) have a short but robust uncus that narrows at the apex to a beak-like pair of spines; at the base there is a pair of spines dorsally. The valves are upturned, expanding to an unequally angular apical part. The patch of scales seen basally in Phauda is absent in rubribasis. The tegumen is very deep, particularly where it joins the uncus. There is an ovate juxta with a pair of outward thumb-like processes dorsally. A saccus is present, slender, rather digitate. The aedeagus is straight, without any cornuti evident.

The Bornean tensipennis Walker was included in Alophogaster by Jordan (1907) and joined at a later date by A. overdijkinki Joicey & Talbot (1925, Ann. Mag. nat. Hist. (9) 16: 653), a Javan species that, like tensipennis, is a dull orange colour and lacks translucent areas. In the hindwing, CuA2 meets CuP at the margin in overdijkinki, but only converges without meeting in tensipennis. Only females have been collected for these orange taxa. A dissection of overdijkinki (slide 1519) lacks the ductus and corpus bursae, but the terminal segments are as in Phauda.