|
Arrhapa
Walker
Type
species: frontalis
Walker, Borneo.
Synonym: Reaca
Kobes (type species
paradoxa
Kobes, Sumatra), syn. n.
The two species in this genus are generally similar externally to those in the
previous two, with a triarcuate arrangement of the dots in the forewing
submarginal as in Calymera; this also serves to distinguish the type
species from Gelastocera
Butler species with similar facies, though Gelastocera males
have bipectinate antennae.
In
the male abdomen there are no setae on the fourth segment or processes on the
fifth, and the tymbal organs are less complex than in Calymera or
Xenochroa. The basal margin of the eighth tergite is notched, but the apex
of the notch is rounded. The uncus is shorter than in Calymera, conical,
blunt. The junction between tegumen and vinculum is simple, and the former is
not strongly expanded. The valves are shorter, deeper than in Calymera,
the blade of the paddle rather rectangular, apically bilobed. The costal process
of the valve is very broad, not constricted near the base, directed slightly
distally. The aedeagus is narrow, with a few apical thorns, and a small vesica
that is only weakly scobinate or spined.
The female (A.
robinsoni
Swinhoe comb. n.) has a very elongate and narrow ductus leading to a very
large, irregularly ovate to spherical corpus bursae that is scobinate
throughout, but with a small, horn-like signum distally.
The genus is restricted to Sundaland.
<<Back
>>Forward <<Return
to Content Page
|
