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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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