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Proneca fola Swinhoe
Proneca fola Swinhoe, 1890, Trans. ent. Soc. London, 1890: 194.


Proneca fola

This is a rather ligneous brown species resembling
Sarbena species, but is distinguished by the more prominent and oblique darker brown band on the forewing that has a cream-coloured subcostal line just anterior to it. The hindwing is white in males and greyr in females.

Taxonomic note. The harpe of the male genitalia is short, broad, in a male from Singapore and long, slender, straight, in a male from Sri Lanka; that of a male from S. Vietnam with the Budapest group is long but robust and regularly downcurved. Male material is insufficient to explore this variation further.

Geographical range. Burma, Sri Lanka, India, Vietnam, Singapore, Borneo, Java.

Habitat preference. The species is known in Borneo from two specimens from Bidi in the lowlands of Sarawak.

Biology. Sevastopulo (1938) reared the larva in India (Calcutta). The head is yellowish and the body has a thick pelt of dark hair on verrucae that is obscured by pink fluff up to the final instar. Head capsules are stacked and can number five or six in a mature larva.

Pupation is in a cocoon spun along a twig, incorporating bark fragments and hair as in
Sarbena. The pupa is reddish brown, rather elongate.

The host plant recorded was Quisqualis (Combretaceae), but there are records also for Terminalia in the same family (Robinson et al., 2001) and for Melastoma (Melastomataceae) and Eugenia (Myrtaceae) in Java (Piepers & Snellen, 1904).

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