09 November 2013

Life History of the Common Dartlet

Life History of the Common Dartlet (Oriens gola pseudolus)

Butterfly Biodata:
Genus: Oriens Evans, 1932
Species: gola Moore, 1877
Sub-species: pseudolus Mabille, 1883
Wingspan of Adult Butterfly: 22-27mm
Caterpillar Local Host Plants: Ottochloa nodosa (Poaceae), Axonopus compressus (Poaceae, common names: Wide-leaved Carpet Grass, Cow Grass), Centotheca lappacea (Poaceae, common name: Sefa).

Physical Description of Adult Butterfly:
On the upperside, both sexes are dark brown with yellowish orange post-discal bands on both fore- and hindwings. The forewing band stretches from the dorsum to almost touching the costa, and is deeply excavate at vein 5. On the underside, the wings are yellowish-orange with post-discal bands mirroring those on the upperside. These bands are roughly defined by varying degrees of black shading.

Field Observations of Butterfly Behaviour:
This small and fast flying skipper is common in Singapore and can be found in parks, gardens and the nature reserve. At these locations, the adults can be seen enjoying the sun in sunny condition, typically in grassy areas or low shrubs. They visit flowers for nectar and puddle on wet ground or even bird droppings for mineral intake.