Type species: ruptaria Walker (= subexpressa Walker).
Members of this genus mostly have the hindwing distinctly angled at the
margin at vein M3. The male antennae are bipectinate in all species discussed
below except subgravata Prout and postvittata Walker where they
are filiform, ciliate.
In most species the uncus is round-shouldered. The arms of the valves
are divided by a deep cleft but not separated by a lobe or valvula. A
potentially definitive feature is a thorn-like process at the apex of the
aedeagus, but otherwise the genus lacks apomorphic features and may therefore be
para- or polyphyletic.
The inclusion of jotaria is tentative. This species lacks the
aedeagus thorn, has the signum of the female genitalia unspined, disklike, and
has a fine black lunulate discal mark on the forewing.
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