Risoba calaina Zerny

Risoba calaina Zerny, 1916, Annln. naturh. Mus. Wien, 30: 190.

Risoba obliqua Prout, 1921, Ann. Mag. nat. Hist. (9), 8: 9.

Risoba obliqua f. philippinensis Prout, 1921, Ann. Mag. nat. Hist.(9), 8: 11.

Risoba amabilis Roepke, 1938, Bull. Mus.r. Hist. nat. Belg., 14: 30, **syn. n.

**

Diagnosis

There is slight sexual dimorphism, females having a bluer green ground to the forewing and narrower, more clearly defined black markings in the marginal area. The strongly variegated facies with a large basal black block on the dorsum and a black bar bisecting the apex are distinctive, apart from the next species as discussed in its description. In the male genitalia a very small saccular process is present and the costal ornamentation consists of an unusual, inwardly directed, thumb-like process.

Geographical range

Sundaland; Philippines (ssp. philippinensis); Sulawesi (ssp. amabilis).

Habitat preference

Martini & Thony (1993) recorded a singleton from 950m on G. Trus Madi in Sabah, and a few other specimens have been taken in the montane zone of Brunei, but the species is generally much more frequent in lowland forest.

Genitalia: