Type species: catocalina Moore.
The genus Trisuloides Butler contains a number of Oriental
species of generally similar external appearance. The type species is sericea
Butler (Himalaya, China, Japan) which has as subspecies or a sister group of
taxa trigonoleuca Prout (Ceram), hawkeri Prout & Talbot (Buru)
and papuensis Warren (New Guinea). Both Trisuloides and Smilepholcia
Prout & Talbot (type and only species luteifascia Hampson from
the N.E. Himalaya) have male genitalia as described for Anepholcia above;
an additional character is the simple vesica to the aedeagus which has
concentric rings of corrugation.
The male genitalia of catocalina Moore depart from this pattern
and indicate that it merits generic status. It may be defined by the white bar
in the postmedial zone of the forewing mentioned in the specific diagnosis
below, by the filiform, ciliate antennae in both sexes and by the following
characters of the male genitalia: the apical spur to the valve; the small,
central, transverse harpe; the spined lateral lobes of the aedeagus; the
multiple lobing of the aedeagus vesica which has a small zone of fine spines
In the female genitalia the most distinctive character is on the seventh
abdominal segment where the sternite is broadly triangular, the tergite
extending round it to almost meet itself centrally.
There is some resemblance in forewing pattern to Elydnodes Hampson
but Elydnodes species are totally grey with, in the male abdomen, lateral
coremata basally and a single one on sternite 8, the latter also seen in Trichosea
Grote. The valves of the male genitalia also resemble those of Trichosea.
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