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“Heliosia” monosticta Hampson
Heliosia monosticta Hampson, 1900, Cat.
Lepid. Phalaenae Br. Mus., 2:
276.
Diagnosis.
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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