View Image Gallery of Tribe Boarmiini

Amblychia Guenée

Type species: angeronaria Guenée.

Synonym: Elphos Guenée (type species hymenaria Guenée, India) syn. n.

The synonymy above unites two groups of very large species on the basis of apomorphies in the male and female genitalia. Amblychia species are relatively uniform grey-brown with a mixture of straight and crenulate fasciae and a strongly angular and excavated margin to the hindwing. Elphos species have more speckled greyish facies and all fasciae are distinctly crenulate.

The male antennae are bipectinate to three-quarters, and the forewing has a fovea and the third sternite has a setal comb.

The male genitalia have the uncus usually bifid and the gnathus strong, apically rugose. The valves are rhomboidal, the angles rounded. The costa is short, sometimes rather swollen, bearing long hair-setae. The more robust cucullar setation extends diagnostically to the centre of the valve, round the distal edge of a central depression, to terminate in a lobe just interior to the ventral angle of the rhomboid. This lobe is more densely invested with short, spinelike setae. The aedeagus usually has a small lateral thorn subapically.

In the female genitalia the ovipositor lobes are diagnostically strongly sclerotised, curved, tapering to an acute apex. The densely scaled, membraneous pair of lobes on the lamella postvaginalis is also definitive. The ductus is short, sclerotised, rather funnel-like. The bursa expands gradually from the ductus to a pyriform distal bulb. When a signum is present, this is distal, marginally weakly dentate.

Larvae of the type species and A. insuetum Butler are illustrated in Sugi (1987). They are robust, blackish or mottled ochre and brown, twig-like, with prominent spiracles and scattered with small white dots and tubercles bearing the setae.

Most host records (Sugi; Sato & Nakajima, 1975) are from Lauraceae (e.g. Lindera, Benzoin, Parabenzoin) but there is a record from Illicium (Illiciaceae).

The genus is most diverse in the Oriental tropics, but extends further east with a single species known from New Caledonia (Holloway, 1979).

<<Back >>Forward <<Return to Contents page

Copyright © Southdene Sdn. Bhd. All rights reserved.