Orsotriaena medus, Nigger, Satyridae

Written by on May 2, 2012 in Indonesia Butterfly with 0 Comments

 Orsotriaena medus, Nigger, Satyridae

Orsotriaena-medus-00

Native South East Asia   Wingspan 4.5-5.5 cm

The sexes are similar though the male is slightly smaller and darker in color. The upperside is a uniform dark brown and slightly transparent allowing the broad white band of the underside to show though faintly. The sex brand on the forewing is a well defined fold with tufts of fine hairs and is located on the upperside above vein 1b. On the upper side of the hind wing, there are also 2 groups of long tufts of hair, one on either side of the median vein. The wet season form is darker, has larger eye-spots, more prominent silvery rings and a wider white median band. The band is yellowish white in the dry season form.
It is a very common butterfly that occurs from sea level to 5000 feet elevation. It is found year round in many diverse habitats. The only requirement is grass and some tree cover.
Unlike most other satyrs, it is not averse to full sun and may be seen out in the open. However, it prefers to search for mates and food in dappled light and is most frequently seen flying close to the ground under trees and shrubs. Its flight is a series of zigzagging hops. It settles down on fallen fruit readily to feed on the fermenting juices. It is perhaps the first satyr to be seen at rubbish dumps with kitchen refuse. Once settled, it opens and closes its wings quickly now and again. It is not shy and may be approached quite closely.

Caterpillar feed on:

Imperata-cylindrica

Imperata cylindrica

Oryza-sativa Panicum-maximum

Oryza sativa Panicum maximum

 

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