Diagnosis. This species is larger than the previous two, the wings a slightly olive-brown, with relatively prominent discal marks and the postmedials on all wings much closer to the submarginals than in the other species. The hindwing underside is paler than that of the forewing, but this is seen also in kona Swinhoe, below. In kona, most of the hindwing underside is whitish, rather than yellowish as in phineusalis, and the postmedial runs much closer to the discal spot over the anterior half of the wing.
Taxonomic note. The taxon mantusalis was transferred to Hydrillodes by Poole (1989), but is not of this genus. Swinhoe (1900) regarded it correctly as a synonym of phineusalis. The male eighth sternite has a central corema as in silvialis (see below), but otherwise differs in that the frame is more extensive and definite; the tergite is narrower, with splayed apodemes. The valve is narrowly ovate, without processes. The saccus is broad, rounded. The aedeagus vesica has a central zone with a number of coarse spines, and there is a field of finer scobination distally.
Geographical range. Peninsular Malaysia, Borneo, Natuna Is.
Habitat preference. The type material is part of a series from the lowlands of Sarawak taken by A.R. Wallace. There is also material from 85 miles above (upstream from?) Pontianak in Kalimantan. In recent surveys, Chey (1994) recorded the species from a Gmelina plantation near Brumas in the lowlands of Sabah.
