This species is almost as common,
if not more common, than the Common Grass Yellow. Amongst the five
extant species in Singapore, this species frequents the same localities
as the Common Grass Yellow, and can be found within and outside the nature
reserves. In Apr/May 2000, there was a population explosion of the
species, and the bright yellow butterflies could be found in abundance
in several locations. However, there was no observation of a mass
migration as is the case with other Pieridae species. 
The Three-Spot Grass Yellow
can be distinguished from the other Eurema species by the 3 cell
spots on the undersides of the forewings. In the photograph shown
here, a congregation of about 100 or more male Eurema blanda snelleni
were discovered puddling in a urine-tainted footpath in the nature
reserves. It was a pretty sight when the butterflies rose in a yellow
cloud as one disturbed their meal, but they very quickly settled down again
to feed greedily. |
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