Type species: perdensata Walker (= ajaia Walker).
Synonym: Panulia Warren (type species achloraria Warren).
The genus consists of dark grey or brownish grey species. The apex
forewing is acute. In most species (N. achloraria is an exception) the
forewing postmedial runs obliquely and more or less straight from two thirds
along the dorsum towards the apex (though it is angled subapically on the
underside of the wing after following a more basal course). The hindwing
postmedial is more curved, though not as strongly as the margin. The postmedials
shade away slightly darker basad, and distally the ground colour is finely
paler. The forewing has a fine, transverse discal bar and a similarly fine
Males of N. achloraria and allies are characterised by a tuft of
scales on the hindwing dorsum at one third, and two further dense brushes of
long scales arising from vein CuA1 at its junction with the cell and more
distally. These interior brushes of scales lie flat on the wing, directed
towards the dorsum. The dorsal tuft is weakly present even in N. unilineata Walker
where it is pale yellow grey rather than dark grey.
Characters of the male abdomen and female genitalia are diagnostic. The
male abdomen has the lateral structures on the eighth segment mentioned in the
introduction to the tribe, and a scaled ridge along the centre of the seventh
sternite. The third sternite has a small central lobe distally that bears a
cluster of scales on each side, and is often slightly bilobed. In the genitalia
the uncus is basally very broad, setose, generally acute: the gnathus is
distally broad, rugose. The valves are somewhat rectangular.
The female has the ductus long, narrow, often sclerotised. The bursa is
small, spherical, the interior entirely weakly spined, or mostly so.
The genus is most diverse in the Oriental tropics, particularly Borneo,
and extends east to New Guinea. The only host record located, for the type
species, is in the family Sapotaceae.
to Contents page