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Birthamula chara Swinhoe
Contheyla chara
Swinhoe, 1901, Ann. Mag. nat. Hist. (7) 7: 464. 
Birthamula chara
Swinhoe; Hering, 1931: 704. 

Birthamula chara

Birthamula chara

See Birthamula Hering and the diagnosis of altichara below. There is a degree of variability and the figures above illustrates extremes of uniformity and variegation. 

Geographical range. Peninsular Malaysia, Borneo, Sumatra.

Habitat preference. During the Mulu survey two specimens were taken in alluvial forest and two in wet heath forest. Brunei records have been from areas of coastal vegetation, swamp forest and dry heath forest.

Biology. The larva was illustrated by Wood (1968) as bright green with irregular, faint longitudinal broken yellow lines. The development of the dorsolaterals is as in the generic description; the thoracic and posterior pairs are black, the latter associated with a central white disc and a pair of much smaller brown-ringed lateral ones. The posterior subdorsals are associated with two lateral white spots and a transverse dorsal bar of white, edged posteriorly with brown. At one third and three fifths along the dorsum from the head are two further white patches, almost circular, ringed with brown, the anterior one half the area of the posterior one. Other variants are shown in illustrations in the collection of the Malaysian Department of Agriculture. The white discs are most conspicuous in the final instar and set on a broad dorsal, reddish brown band which, between large black scoli on Al and A8, is flanked by irregular dorsolateral yellow lines; the scoli are otherwise green.

The host-plant was oil palm (Elaeis: Palmae).

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