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Aburina Möschler
Type
species: sobrina Möschler, Africa.
Synonym:
Ugana
Swinhoe
(type species piana Swinhoe = sobrina).
The
genus is predominantly Afrotropical, the species below being the only Oriental
representative.
The only
Oriental member of this genus has facies rather like a delicate species of Ugia,
except the oblique postmedial has its pale component distal, rather than basal
to, the dark component. The submarginal is pale and more irregular, less stepped
than in Ugia
(p.
187). On the underside, the discal marks are darker brown, contrasting with the
pallor of these on the upperside, and there are curved dark postmedial and
marginal lines, the former broader and more diffuse, displaced distally relative
to the postmedials on the upperside. A distinctive generic feature is the
elongation and forward direction of the labial palps, with scaling in the
vertical plane dorsally rendering the third segment as deep as the second. The
head, palps, fore- and mid-tibiae are diagnostically dark brown, conspicuous
against the fauna of the rest of the body and wings. The male antennae are
fasciculate.
In the
African species, particularly the type species, the forewing postmedial is
acutely angled subcostally, the submarginal markings are darker than the ground,
and the darker fasciae on the underside coincide with, or are basal to those on
the upperside. The male antennae are fasciculate but with one bristle much
longer and thicker than the rest, giving them a bipectinate appearance. The
structures of the labial palps, darkening of them, the head and the legs are as
in the Oriental species.
The male
eighth segment is of the framed corematous type, but the genitalia differ
considerably in the African type species and the only Oriental species. The
valves in the former are long, rather spindle-shaped, with a slight corona of
setae at the rounded apex. The sacculus is represented by a longitudinal flange
with a subbasal spine. The juxta is obscure but possibly of the inverted ‘V’
type. The aedeagus is short, broad, with a slightly serrate lobe at the apex,
and the vesica is large, rather conical. In the Oriental species the genitalia
and particularly valves, are distinctly elongate, the apices of the latter
acute. There is a comparable saccular flange with a slight distal projection.
The juxta is of the inverted ‘V’ type. The aedeagus is longer, slender,
unornamented but the vesica is comparable.
In the
female genitalia the ostium is situated between the seventh and eighth segments,
but is within a distinctive scobinate sterigma in sobrina
that
is lacking in the Oriental species. The bursa is short, broad, ovate to
spindle-shaped, scobinate, lacking a ductus in sobrina,
but elongate, narrow, unornamented, with a
moderate
ductus in the Oriental species.
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