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Stictoptera trajiciens Walker
Steiria trajiciens
Walker, 1857, List Specimens lepid. Insects Colln Br. Mus. 13: 1137.

Stictoptera trajiciens

The forewings are greyish with the generally longitudinal striation broken by a roughly straight transverse arrangement of thin lines involving the reniform and postmedial; there is a diagnostic white spot subtornally (weak in the specimen illustrated). The uncus of the male genitalia is sigmoid. There is no polymorphism in the facies.

Geographical range. Oriental tropics to Sundaland, Philippines, Sulawesi and New Guinea.

Habitat preference. In the Mulu survey three were taken in upper montane forest on G. Mulu and one in secondary alluvial forest near Long Melinau. In Brunei two were taken in dry heath forest in the lowlands at Telisai.

Biology. The larva was described by Bell (MS). It is shaped like that of cucullioides with a ‘berry-like’ swollen anterior part, from thoracic segment 2 to abdominal segment 2; the eighth abdominal segment is also slightly tumid. The colour is dull watery green except for the swollen anterior part which is dull maroon; abdominal segments 10 to 12 are soiled with light maroon and the sides of 10 are largely yellow; the prothorax is yellow as well as the anal claspers, but the other prolegs are green, the feet largely bilobed, livid pinkish white and with large crochets; there are lateral and subspiracular whitish lines from abdominal segments 2 to 10 (on the green part). The length at maturity is 20mm and the breadth of the swollen part is 5mm. The head is light orange or greenish orange. Another colour variant lacked the maroon colouration of the swollen part and posterior part of the abdomen. The larva turns a greenish shiny purple prior to pupation.

The host-plant recorded by Bell in India was Garcinia indica, and the species has been reared from G. kandis in Peninsular Malaysia by Dr Tho Yow Pong.

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