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Pseudidiochlora Gen. n.

Type species: temburong sp. n.

In appearance, species of this genus resemble large Idiochlora species of the type with translucent patches to the forewing (e.g. I. berwicki). The forewing margins are irregular, slightly concave over the anterior half and wavy, oblique, posterior to a central angle. The hindwings are tailed with another slight concavity at the margin between veins M1 and M3. Both pairs of hindwing veins are stalked as in the Hemitheiti. The male antennae are robustly bipectinate, the pectinations tapering away to two thirds of the way along the shaft.

The wings are dull grey-green, with the translucent area irregular over the central part of the forewing. On the underside the wings are greyer, with the translucent area conspicuous and also a paler marginal zone that is much less evident on the upperside.

In the male abdomen the third sternite lacks setae and the eighth segment is unmodified. The genitalia have uncus and gnathus quite strongly sclerotised, the socii about half the length of the uncus, rather rectangular. The saccus is simple, not cruciform. The valves have two diagnostic features: the costa extends as a fine spine separate from, but adjacent to, the main distal part of the valve, itself narrow, tapering. The sacculus extends in a massive sclerotised plate, apically rounded, with a dorsal subapical spur and a much more basal spur on the ventral margin.

The female genitalia have the ovipositor lobes of the modified type, albeit rather rounded than oblique. The sterigma consists of two zones of puckering, not quite concentric, with the ostium relatively anterior within them. The ductus is short, the bursa pyriform, slightly scobinate throughout, with a patch of slightly stronger sclerotisation centrally within this (Fig 424, a female from Peninsular Malaysia).

The genus contains two Sundanian species.

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