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Anuga
indigofera Holloway,
Anuga indigofera Holloway, 1976: 17.
Diagnosis. The dark, indigo-grey, relatively unfasciated forewings with a slender,
subtornal, pale cream line and a subapical cream patch distinguish this species.
The processes from the transtillae in the male genitalia are more strongly
curved than in insuffusa and kobesi.
Taxonomic note. The diagnostic characters of the forewing are shared by A.
multiplicans Walker (S. India, Sri Lanka). In the male genitalia the
curvature of the transtilla arms, the absence of moderate cornuti from the
aedeagus vesica, and the rather shallow, rounded uncus are also as in multiplicans.
The two are therefore probably sister-species.
Geographical range. Borneo, Peninsular Malaysia, Sumatra.
Habitat preference. All three Bornean specimens were taken in upper
montane forest, the type from very tall forest at 1500m on the Pinosuk Plateau
of G. Kinabalu (alas now cleared for a golf course), and two further specimens
at over 1600m on Bukit Retak and Bukit Pagon in Brunei.
Biology. Bell (MS) and Gardner (1948a) have described the early stages of the
sister-species, multiplicans. The larva measures 42mm by 6mm at maturity
and is spindle-shaped. The head and body are a dirty, translucent, pale green,
the setae arising from small purple-black blotches. There is a bright yellow
lateral band.
The larva lives on the underside of youngish leaves of the host-plant,
eating them untidily, leaving the midrib and side-veins. Pupation is on the soil
surface under a dead leaf in a loose cocoon of silk and litter particles.
The host-plants are Holigarnia (Bell), Semecarpus (Gardner),
both Anacardiaceae, and Cajanus (CIE records) in the Leguminosae.
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