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Matanga Gen. n.
Type species: rubicunda Swinhoe.
The sole species in this genus has been placed in Chaetolopha Warren,
together with a Himalayan species C. incurvata Moore. These are
the only Oriental taxa in an otherwise Australasian genus, and morphologically
unrelated to it or to each other (Holloway, 1986b). The forewing facies is
somewhat similar to that of some Australasian Chaetolopha such as C.
ornatipennis Warren, with contrasting ochreous dark brown and fawn bands on
the forewing, the postmedial strongly dentate, though the medial dark brown zone
in Matanga does not narrow so markedly towards the dorsum.
Characteristics of the genitalia are, however, very different. Chaetolopha
males have a large hooked spine at the base of the valve costa, and a broad,
rather excavate saccus. The uncus is vestigial. In Matanga the uncus is
stronger, the valves simple, unornamented, and the saccus narrow, convex.
The female in Chaetolopha has the ovipositor lobes long, narrow,
acute. The ovate bursa is set asymmetrically on a fluted ductus, and contains a
long, slender, hornlike spine based in the basal bulge of the bursa. In Matanga
the ovipositor lobes are more typical, the ductus very much longer, with a
sclerotised zone where it joins the somewhat less asymmetric bursa: the signum
is a small band of scobination longitudinally on the more expanded side of the
bursa.
In C. incurvata the male genitalia are not dissimilar to
those of Matanga, though the aedeagus is shorter, stouter and contains a
mass of cornuti. The bursa of the female contains two large, thornlike spines
centrally.
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