Vestalis gracilis (Clear-Winged forest Glory) is a large Demoiselles species of damselfly which inhibits heavily shaded forest streams. It is not recorded from the Book of Dragonfly by Mr. Tang. It could well be a new discovery in the Singapore odonata’s record. As far as I know, this species can only be found at the forest streams in the northern region of Singapore.
The male has a very slim abdomen. It has yellow stripes at the side of the thorax. The wings are slightly tinted brown. Older individuals developed pruinose over it’s body. Females are easily identifiable, with very similar appearance as the males.
Several individuals can be seen on overhanging plants over running streams or at the heavily shaded forest trails. This is an unmistakeable and very elegant species of damselfly.
Scientific Name: Vestalis amethystina
Common Name: Common Flashwing
This is a relatively large damselfly, the total body length is about 50-56mm and commonly found near forest streams at Central Catchment Nature Reserves and Bukit Timah Nature Reserves. So far, I have seen this species at MacRitchie reservoir -along the board walk, Upper Seletar Reservoir, Upper Pierce Reservoir, Chestnut Ave forest, and Dairy Farm Nature Reserves.
Males and females look quite alike, the main difference is their anal appendages. Both has metallic green body with very long and thin legs. It has a pair of transparent wings which show off a sparkling bluish purple iridescence from reflection from the light.
This species tend to occur on smaller streams in the primary forests.