TRIBE HULODINI
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Lacera nyarlathotepi Zilli & Holloway
Lacera nyarlathotepi Zilli & Holloway, in prep.
Lacera procellosa Butler sensu Holloway, 1976: 39.


Lacera nyarlathotepi


Diagnosis. This and the next species have narrower forewings than noctilio with the reniform mostly dark, though with a paler spot posteriorly within it. The markings of nyarlathotepi and the related procellosa Butler are more variegated, less uniform than in uniformis Holloway. The submarginal zone of the forewing in uniformis is distinguished by a series of oblique, approximately parallel, paler lines. On the underside, uniformis has the hindwing more strongly suffused violet, with the fasciation more prominent; on the forewing the female of uniformis has a cream area basal to the postmedial.

Taxonomic note. This species is very similar to procellosa (Japan, Oriental tropics to Sumatra, Java and Lombok) but differs in two features: the dorsal loop to the forewing postmedial is bulbous and often highlighted with paler colour; the small spined diverticulum most distant from the long one in the aedeagus vesica is reflexed and bears a small lateral lobe. The material from New Guinea referred to and illustrated as procellosa by Holloway (1979) represents a new species, azatothi Zilli & Hogenes (in prep.).

Geographical range. Borneo.

Habitat preference. This is the most frequent of the three species and ranges from the lowlands to 2600m. It is perhaps slightly commoner in montane habitats between 1000m and 2000m.

Biology. Mutuura et al. (1965) illustrated the larva of the closely related procellosa (as alope) in Japan. It is long, slender, tapering at the head and rear, leaf-green, with a prominent pair of dull yellow tubercles on A8 and with a general scattering of small white dots; there is one large white dot subdorsally on A8. Miyata (1983) noted Caesalpinia (Leguminosae) as a host plant, but Sugi (1987) stated that the larva fed on Gleditsia in the same family.

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