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Thalathoides conjecturalis Swinhoe comb. n.
Bryophila conjecturalis Swinhoe, 1890, Trans ent. Soc. Lond., 1890: 222.
Thalatha sinens Walker, 1862 (nec 1856), J. Linn. Soc. Lond. (Zool), 6: 187.

Thalathoides conjecturalis

See Thalathoides curtalis sp. n.

Taxonomic notes. The only specimen from Sri Lanka has shorter valves with a broader neck to the cucullus. The cucullus is slightly narrower in a Sulawesi specimen dissected (slide) 14126.

Geographical range. India, Sri Lanka, Burma, Borneo, Sulawesi.

Habitat preference. The species has been taken in dry lowland heath forest at Telisai, Brunei, and in lower montane forest on G. Mulu and G. Api in Sarawak. It is uncommon.

Biology. Bell (MS) described the larva and pupa. The larva is similarly shaped to that of T. sinens and C. fasciata. The head is orange, speckled olive-green, the labrum white. The body is a flesh pink with dorsum suffused smoky brown and with a thin, dark, central line. The long primary setae arise from white chalazae set in black patches edged with ochre. Most setae are black, though those on the thoracic segments are longer, white, directed forwards. Each seta bears tiny hairlets along its length, these being longer and more numerous on the white setae.

Pupation is in a roomy silken cell coated with soil particles, set on the ground surface.

The host-plant was Olea (Oleaceae).

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