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“Meganola” triangulalis Leech
Nola
triangulalis
Leech, 1888, Proc. zool. Soc. Lond., 1888: 608.
Diagnosis.
The forewing of this and the next species has a
distinctive darker grey triangular mark based on the costa just basal to
central; a double (the more basal line finely zig-zag) postmedial runs parallel
to the distal side of this triangle. The mae hindwing grades paler towards the
dorsum. The two spcies can only reliably be distinguished from the male
genitalia. In triangulalis the valves are broader, particularly over the
apical half, and the harpe is more robust and in a more distal position.
Taxonomic note. “Meganola”
scriptrix
van Eecke comb. n. (Sumatra) is a further member of this species group.
It has much blacker forewing markings, the antemedial stronger, obtusely angled,
and the basal component of the postmedial more strongly and irregularly zig-zag,
more distant from the more distal, linear component.
Geographical range.
Japan, Taiwan, N.E. Himalaya, Sundaland.
Habitat preference.
The species has been taken most
frequently in lower montane forest on G. Mulu at 1000m, but may also occur in
the lowlands.
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