Udaspes folus, Grass Demon, Hesperidae

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

Udaspes folus, Grass Demon, Hesperidae

Udaspes-folus-00

Native South East Asia   Wingspan   4-5 cm

The Grass Demon prefers forest edges or clearings where dappled light is present. Its black and white colouration may have evolved to take advantage of the dappled light in these areas. The pied pattern which seems prominent in the open is effectively disruptive in the shade and the butterfly is difficult to locate once it settles down.
The Grass Demon is a nectar lover and has a long proboscis compared to body size. This makes it easy to get to nectar of flowers with long corolla tubes. In gardens, the Common Periwinkle Vinca rosea, and, the Lantana are its favourite flowers. It rarely visits bird or dung droppings. It is fond of water and often seen perched on a stone in a stream-bed.
Pupation takes place on the same plant within a cell. The pupa is long and cylindrical, watery green in colour. It has a long conical projection in front of the head. The eyes are easily seen but do not protrude out of the outline of the pupa. The pupa broadens towards the shoulders and the abdomen gradually tapers to the last segment.
The most striking characteristic of the pupa is its proboscis. It is long and thin generally extending up to and a little beyond the tip of the abdomen. The pupa is the same color of the caterpillar and unmarked. It is covered in a thin layer of white powder. The body band is neither too tight nor too loose and allows the pupa to wriggle if disturbed.

Caterpillar feed on:

Hedychium-coronarium

Zingiber-officinale

Hedychium coronarium 

Zingiber officinale

Curcuma-aromatica

 Curcuma aromatica

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