Macotasa suffusus Talbot
1926, Sarawak Mus. J., 3(2): 132.
This and the
next two species are very similar externally. M
suffusus resembles M. biplagella Butler
in having a straw yellow forewing ground colour and, in males, a rectangular
black mark on the forewing costa. In M.
tortricoides Walker the ground colour is fawn and the costal black mark is
triangular. In the male genitalia the uncus is bifid in suffusus and biplagella but
entire in tortricoides and allies.
Males of suffusus differ from those of
biplagella in having a dark zone at
the base of the forewing dorsum and a curved, pale rufous line from the costal
rectangle towards the centre of the margin, stopping 3mm short of it. The
females of the two species are more similar, but the blackish triangle on the
forewing costa is more prominent in suffusus;
in the genitalia the base of the ductus is expanded and folded rather than
simple and squarish.
species and biplagella are only known
from Borneo, whereas tortricoides is
related to M. nubecula Moore (India to
Burma and Andamans) and M. nubeculoides Holloway
(Peninsular Malaysia, Sumatra, Java, Bali).
species is frequent to common in a range of lowland to lower montane forest
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