Singapore Post released a beautiful set of stamps, on April 21, 2010 and representing 4 species of Butterflies, featured on this registered cover. The species are:
1st Local - Common Birdwing (Troides helena)
It a large and beautiful butterfly having seventeen subspecies and often found in the wildlife trade due to its popularity with butterfly collectors.
80¢ - Tailed Jay (Graphium agamemnon)
It is a predominantly green and black tropical butterfly also called Green-Spotted Triangle, Tailed Green Jay, or the Green Triangle. It is a common, nonthreatened species native to India, Sri Lanka and Southeast Asia.
|Back of cover with Parcel PO and Delivery Office postmarks (18/19/20.05.11)|
$1.10 - Common Posy (Drupadia ravindra)
This is a small butterfly with a wingspan of about 3cm to 3.5cm. It has a swift, darting flight and can be found in primary and secondary forest, and is usually seen along forest trails.
$2 - Blue Glassy Tiger (Ideopsis vulgaris)
It is a black and bluish-white butterfly. Males do not have any special sex-marks on the wings.
|Official FDC issued by Singapore Post|
|150 Years of Singapore Botanical Garden strip of 4 se-teanant stamps...|
|... and Miniature Sheet|
|Pond Life Definitive Set (Small Denominations)|