27 May 2014

Butterflies Galore! : Malayan Eggfly

Butterflies Galore!
The Malayan Eggfly (Hypolimnas anomala anomala)

The Malayan Eggfly is a seasonally common species in Singapore.  The caterpillar host plant is the Australian Mulberry (Pipturus argentus), a secondary forest plant that is quite widespread in distribution across the island. The Malayan Eggfly occurs in two forms, i.e. form-anomala and form-nivas. This species is a good example of mimicry, where the Malayan Eggfly mimics the distasteful Danainae "crows". Form-anomala is a good mimic of the male Striped Blue Crow, whilst form-nivas is a good mimic of the Striped Black Crow.

Pictured here is a form-nivas Malayan Eggfly, featuring the white patch on the hindwing that the form-anomala does not have. The white markings on the hindwing can be variable, from a few obscure white stripes to a large distinct patch. This individual was photographed last weekend at the Dairy Farm Nature Park by young ButterflyCircle member, Jonathan Soong.