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Tampea
Snellen
Type
species: lithosioides Snellen, Java (=
reversa Walker).
Synonym:
Ocrosia Hampson (type species reversa
Walker, Borneo).
This
genus and its synonym are based on two taxa where the type material has not been
located (lithosioides;
male in Staudinger collection but not in MNHU, Berlin (W. Mey, pers.comm.))
or is in poor condition (reversa;
female in OUM, Oxford but lacking one forewing and the abdomen).
Nevertheless, the original description of the male has distinctive features of
venation and androconia, and can be matched with a male and female from Java in
BMNH (slides 4606, 4607). The type of reversa
matches the female in available characteristics.
The
forewing venation of both sexes has an unusually extensive radial sector
branching system of (R2((R3 (R4, R5))M1)), and the male has an elliptical patch
of white androconial scales on the underside. The male hindwing has the costa
strongly bowed and the apex concave, so the margin to M3 or CuA1 (one is lost)
is distinctly sigmoid, with a fringe of hairs along the convex part. The male
venation is shown in Fig 10f, and is similar to that of the monobasic genus Holochrea
Hampson (type species xanthogramma Hampson,
Sangihe), which also has an androconial patch on the forewing underside. The
type species is sexually dimorphic, as discussed in its diagnosis below.
Fig.10f: Tampea
reversa Walker
The
male genitalia have the uncus broadening to the apex where there is a small
apical spur. The valves are elongate-ovate with a central longitudinal pleat,
and the vinculum is narrow but expanded to support a membrane with some setae.
The aedeagus vesica is generally coarsely scobinate. The seventh abdominal
segment has lateral coremata. The male abdomen in Holochrea is more distinct from that of reversa than are those of other species here included in Tampea
that lack the androconia and peculiarities of venation. Holochrea
lacks terminal coremata but has them laterally on the fourth segment and
also on the exterior of the valves. The valves are much larger, apically
divided, complex, and have a furca-like structure between them. The aedeagus is
slender, straight. It is therefore not clear whether Holochrea
should be included in a wider concept of Tampea.
The
female has an irregularly pyriform bursa set on a slightly tapering ductus;
there are two signa, infolded patches of scobination apically and laterally.
There is a slight colliculum distally on the ductus. A corethrogyne may be
present.
Apart
from the type species, further species are transferred tentatively from Eurosia
Hampson (see Eurosia
Hampson) and a new one described. These lack some of the
features just described for reversa, particularly
the venation characters, but have similar coloration and share a number of the
genitalic features, as indicated for each. The genus thus extends from Sundaland
to Wallacea.
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