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Monocerotesa Wehrli

Type species: strigata Warren.

The genus includes mainly small yellow species strongly marked with dark brown striae or punctate fasciae. In the male the antennae are fasciculate, and there is a broad, shallow fovea with posterior flexure of the anal vein to accommodate it. The forewing radial venation is reduced to four veins, with R1 arising independently from the cell. The setal comb on sternite 3 is small or absent.

In the male genitalia the uncus is often modified with dorsal or lateral processes. The gnathus is vestigial. The valve usually has a strong cucullus, a setose process arising from the interior of the costa, and a spur on the ventral margin. The aedeagus vesica is scobinate but lacks cornuti, the aedeagus itself being short, but with apical processes or spines in some species.

The female genitalia have the sterigma broadly sclerotised, complex, often with protrusive lateral processes. The bursa has general scobination (the type species, with the neck fluted and sclerotised) or patches of sparse scobination (M. proximesta sp. n.), but no definite signum.

The centre of diversity is in the Oriental Region but the genus as strictly defined extends weakly eastwards to Sulawesi (M. maculilinea Warren) and the S. Moluccas (M. seriepunctata Prout).

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