Last Updated on Thursday, 01 June, 2023 11:57:00 PM


Damselflies of Borneo  >  Family  Calopterygidae  >  Genus  Vestalis  >  Vestalis atropha

An Endemic Damselfly of Borneo


Vestalis atropha Lieftinck, 1965
Vestalis
atropha Lieftinck, 1965
Endemic of Northern Borneo
 


Identification Guide to female Vestalis amoena
Family: Calopterygidae
Vestalis atropha
An Endemic Damselfly of Borneo


Identification Guide to ♂ Vestalis amoena
Identification Guide to
Vestalis atropha
Common on Borneo forest streams
♀50mm
body length = 50mm
hind wing = 35mm

 


Ovipositor of a female Vestalis atropha
Ovipositor of a female Vestalis atropha
♀50mm


Segment 10 : Anal appendage and Paraproct
Segment 8 and 9 : Ovipositor of a female damselfly consists of :
Ovipositor :
1-Stylus
2- Basal plate (Lam)



Slender and fairly large with long thin legs. Head and body are mainly metallic- green. No pterostigma on the wings

This male Vestalis atropha size measurement :
Whole body length = 60mm
Front wing length = 36mm
 



Rounded seminal vesicle (end of segment 2) fully stored with sperms ready to mate.

Seminal Vesicle is the bulblike structure at the end of segment two of a male for storing sperm. Before mating, all male odonates translocate sperm from the testes (segment 9) to this penis at segment 2 and stored in the seminal vesicles.
 



Compare with V. amoena and V. amethystina, the inferior anal appendages of this Vestalis atropha are withered and thin.
 



Superior anal appendage curved inward and terminally expanded.
The inferior anal appendages (the lower pair of appendages) of Vestalis atropha are so shot and thin that could not be seen from top.
 



Here are index to damselflies sorted according to colour for our quick identification:

1- GREEN damselflies of Sabah, Borneo
2- BLUE damselflies
3- RED damselflies
4- ORANGE damselflies


Out of the global 10 families of damselflies, the following 7 families  are found in Borneo Island :

01- Family Calopterygidae 色蟌科
02- Family Chlorocyphidae 鼻蟌科
03- Family Coenagrionidae 細蟌科
04- Family Euphaeidae 溪蟌科
05- Family Lestidae 絲蟌科
06- Family Platycnemididae  琵蟌科/扇蟌科
07- Family Protoneuridae 原蟌科

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Damselflies of Borneo