31 August 2013

Life History of the White Palm Bob

Life History of the White Palm Bob (Suastus everyx everyx)

Butterfly Biodata:
Genus: Suasus Moore, 1881
Species: everyx Mabille, 1883
Sub-species: everyx Mabille, 1883
Wingspan of Adult Butterfly: 24-28mm
Caterpillar Local Host Plant: Daemonorops augustifolia (Arecaceae; common name: Water Rattan Palm).

Physical Description of Adult Butterfly:
The adults are diminutive in size. Above, the wings are brown and typically unmarked. In some female specimens, small white spots might be present in space 2 and the cell in the forewing. In the hindwing, the tornal area and tornal cilia are white. Underneath, the wings are brown and overlaid with buff scaling. In the hindwing, the lower two-thirds are white with several dark spots of varying sizes. The abdomen is brown and white banded.

Field Observations of Butterfly Behaviour:
The White Palm Bob is rare in Singapore. Sightings are rather localized to a forested area in a reservoir park. They are usually found flying in the deep shaded area near ground level. At times, they are also sighted puddling on wet ground and on bird droppings.