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Spaniocentra Prout

Type species: pannosa Moore, Sri Lanka.

This genus has features typical of the Rhomboristiti (Geometrini) and is best defined on genitalic features.

In the male the valves are ovate, the costal margin expanded over the distal half. Subcostally there is a setose flap on the interior lamina that increases basad, often to end in a digitate process. There is at least one massive spine arising from the sacculus, sometimes two. The aedeagus is usually broad, often spined or with cornuti in the vesica.

In the female the ductus is short, broad, sclerotised, the sclerotisation often extending into the bursa. The lamellae vaginales are modified to form a pouch.

The biology of the type species was briefly noted, and the larva illustrated, by Moore (1884-1887). The larva is green, slender, twig-like, with a conical prothoracic protruberance. The spiracles are black. The pupa is green with the abdominal segments speckled black. The host-plant is Loranthus (Loranthaceae).

The genus is diverse in the Oriental tropics and subtropics, with a few species in the Moluccas and New Guinea. Several of the Oriental species were reviewed and described by Holloway (1982).

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