Titulcia species have a satiny white ground colour as in the previous two
genera. That of the forewings is particularly satiny and usually divided into
three blocks by bands in golden yellow, rusty red and brown. One of the forewing
radial sector veins is lost, and there is no areole, so this sector only
includes one rather distal bifurcation. In the hindwing, one of the sequence M2
to CuA2 is lost (M3 according to Hampson (1912), but loss of M2 is equally
plausible), CuA1 is stalked with the remaining M vein. The labial palps are
long, the third segment particularly so, with a subapical ring of hair.
the male abdomen there is a tymbal structure on the basal sternite similar to
that of Ariolica, flanked by long, slender coremata that bear numerous
short projections (Fig 396). The eighth tergite has rather triangular apodemes.
In the genitalia the valves have a basal exterior hair pencil, and may or may
not have a relatively distal costal process. The aedeagus vesica contains a
the female genitalia (eximia) the ostium is very broad, and the ductus
tapers as an elongate funnel to a small, irregular but thick-walled and densely
spined corpus bursae.
The genus is restricted to S.E. Asia and Sundaland. Most species occur in
Borneo, the exceptions being
Warren (Java, Sumatra) and T. argyroplaga
Kobes (1997) indicated that the larvae were tree feeders and formed
typical boat-shaped cocoons.
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