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Porsica ingens Walker inopinata ssp. n.  
    Porsica ingens
Walker, 1866, List Specimens lepid. Insects Colln Brit. Mus. 35: 1823.
    Porsica ingens Walker; Kiriakoff 1968: 26.

Porsica ingens inopinata (paratype)

Specific diagnosis.
In general appearance, especially in the costal and dorsal dark brown marks on the forewing, the species resembles punctifascia, benderi and albescens, but the forewing ground is a greenish fawn, the central zone without dark markings, the reniform being an obliquely transverse pale dash. The greyish marginal band at the tornus is distinctive also.

Subspecific diagnosis. 25-26 mm. This subspecies differs from the typical race in lacking a central dark lunule to the forewing reniform and in the reduction of the dark brown areas along the forewing dorsum. In the male genitalia the uncus is tapering rather than squarish; the juxta has a small central notch rather than a large, v-shaped cleft; the harpe has the two projections equal in size rather than the ventral one being smaller.

Holotype BRUNEI: Labi, 75 m, Rempayoh primary forest, Feb. 1982 (Lt. Col. M.G. Allen) BM notodontid slide 929.

Paratypes. 1 SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), BM 1978-206, Site 15, February, Camp 2.5, Mulu, 1000 m, 413461, lower montane f.; 1, same general data but Site 13, February, Camp 2, Mulu, 500 m, 401464, mixed dipterocarp forest.

Geographical range. N.E. Himalaya; Borneo, Peninsular Malaysia (Bukit Kutu).

Habitat preference. The few records indicate that primary forest is preferred, from the lowlands to at least the lower montane zone.

Biology. Gardner (1943) described the larva of the typical race. The head is dull yellow with black markings. The body is smoky white or pale brown above with irregular dark brown lines; it is more blackish laterally and ventrally. The stematopods are dull yellow. The host-plant is Antidesma (Stylaginaceae).

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