Unassigned, possibly plesiomorphic genera
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“Heliosia” monosticta Hampson  
Heliosia monosticta Hampson, 1900, Cat. Lepid. Phalaenae Br. Mus., 2: 276.

"Heliosia" monosticta
(x 1.63)

The forewings are distinctly ovate, ochreous yellow that grades darker and browner towards the costa. The black dots noted by Hampson (1900) may have been stray scales, as fresh material shows no consistent occurrence of these. The hindwings are greyish brown.

Taxonomic note. The forewings are similar in general appearance to those of “Narosodes” hampsoni, though the forewing venation differs in having M3 stalked with CuA1, and CuA2 arises in a more basal position. The male genitalia also show similarity, with a rather tridentate apex to the valve, though with more division into a bifid dorsal part and a simple saccular part. The aedeagus vesica (not everted) has a similar elongate mass of cornuti. The female genitalia have short, broad structures, with irregular bands of scobination extending from the ductus into the bursa; there are small pockets laterally on the seventh segment.

Geographical range. Borneo.

Habitat preference. The holotype is from Pulo Laut, a low-lying island to the south of Borneo. In recent surveys five specimens have been taken in lowland forest at Poring, at about 600m on the eastern slopes of G. Kinabalu, and singletons have been taken in dry heath forest and coastal scrub in the lowlands of Brunei.

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