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Eois sundasimilis sp. n.  

Eois sundasimilis (holotype)
(x 1.16)

10mm, 9mm. The facies is more or less as in E. dissimilis Moore (Indian Subregion) and E. verisimilis Prout (Sumbawa), with irregular, diffuse reddish fasciation on rather deep yellow, the postmedial being more intense than the rest: the forewing costa is also red, this diffusing away posteriorly. The main difference is in the male genitalia where the dentate process of the valve costa (or processes; a feature of subgenus Bardanes) is large, central, asymmetric (directed distad). There are two narrow central processes in dissimilis and a row of several that increase in size distad in verisimilis. The aedeagus vesica has two long, robust cornuti: these are more slender in dissimilis, and verisimilis has a long row of much smaller ones. Whilst the ornamentation of the bursa is more or less typical of Bardanes in the new species, it is reduced in dissimilis, very basal only, the main signum being absent and the accessory spines small. A female from Penang (slide 18774) has a slightly different shape to the signum and strengthening of the accessory spines, but is much closer to sundasimilis than to dissimilis.

Holotype  MALAYSIA: Sabah, Danum Valley, 170m, 4.58N, 117.48E (S.J. Willott) Primary understorey, W5, West Trail, DVFC, 10.iii.94, BM geometrid slide 18617.

Paratype. General data as holotype but W9, 17.iii.94, BM geometrid slide 18618.

Geographical range. Borneo, ?Peninsular Malaysia (Penang).

Habitat preference. Both specimens were taken in lowland dipterocarp forest.

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