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Platycerota Hampson

Type species: spilotelaria Walker, India.

This is a small Oriental genus where the species have rather rounded wing margins, speckled grey-brown or reddish brown wings with strong postmedials. Distal to the postmedial at the forewing apex is often a pale patch or patches that may also include black marking: the presence of such marks varies within each species. Both male and female antennae are filiform, densely ciliate, the cilia very short in the majority of the genus, though in P. vitticostata Walker comb. n., here transferred to the genus on other grounds, and its Bornean relative they are bipectinate in the male.

The male genitalia have the uncus set on a broad, shallow, but often square- shouldered base: socii are usually present. The valves have setation typical of the major grouping of genera but lack peg-like setae; there are no coremata. The costa has a single triangular process more or less centrally, but often terminates distad with a small spur. A furca is present. The aedeagus vesica bears large cornuti: these are abundant in some species.

In the female genitalia (P. balia Prout), the bursa is large, basally scobinate with a diverticulum. From one third to three quarters it is sclerotised, fluted, with an obliquely longitudinal row of spines within this zone. The apical quarter is unsclerotised but contains a small stellate signum distally.

The genus is Oriental with most other species found on the Asian mainland apart from P. crinita Warren in the Philippines (Luzon). It is probably closely related to Crypsicometa Warren where species have been reared from Ilex (Aquifoliaceae) (Sato & Nakajima, 1975; Chang, 1990). Indeed, the male genitalia of the type species indicate Crypsicometa might best be placed as a synonym of Platycerota.

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