Type species: triangularis Warren.
This genus was treated as a subgenus of Sauris Guenťe by Prout (1932c), but has subsequently been regarded as distinct (e.g. by Dugdale
The appearance is typical of the Sauris group, with greenish grey
forewings bearing numerous wavy fasciae of dark grey of variable intensity such
that the ground colours show through as paler fasciae. The hindwings are dark
grey and, in the type species, distinctly triangular with a concave distal
margin: the anal area in the male is modified into a small basal lobe as in
other members of the generic complex but this is relatively weak. The male
antennae are filiform, finely ciliate, slightly swollen over the central
portion, another feature of the whole complex.
In the male genitalia the uncus is flanked by triangular setose socii,
but these are not so pronounced as in Sauris. The valves are rectangular
with the costa produced into a simple, digitate lobe. The anellus is densely
invested with fine, hair-like setae. The second abdominal sternite is
No females have been located, but see Eupitheciini.
The genus contains one other species, D. hebes Prout, found in Sulawesi, but Sauris muscosa Rothschild (New Guinea,
Sulawesi) has male
genitalia with the uncus and apical process from the valve costa as in Dystypoptila,
but also has a pair of coremata between the genitalia and eighth segment as
in the next genus, and a hindwing lobe more typical of Episteira Warren
and Sauris (see also S. improspera Prout). Dugdale
(1980) referred to muscosa as 'aberrant' within Sauris.
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