Borneo birdwing

Description

The wingspan ranges from 150 to 180 mm (female),the hindwings are discreetly scalloped.The body is black with yellow marks on the ventral abdomen.Troides andromache is sexually dimorphic.The males have black upperside forewings.The underside of the forewings is black marked,in the postdiscal area and between the veins,with white.The hindwings are yellow with black veins and have a border of marginal black triangles.The females have white forewings with black veins lined with grey.The black veined yellow hindwings have wide-bordered black margin and a wide submarginal formed of confluent black spots.