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
Endemic of Northern Borneo
Family: Calopterygidae
Vestalis atropha
An Endemic
Damselfly of Borneo
Identification Guide to
Vestalis atropha
Common on Borneo forest streams
♀50mm
body length = 50mm
hind wing = 35mm
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 :
RELATED TOPICS
Damselfly head include :
1- compound eyes,
2- ocelli,
3- antennae,
4- mouth structures
Dragonflies of Borneo
"With 275 named species so far recorded in Borneo, the island has one of the
richest and most exciting dragonfly faunas in the world. More than 40% of
species occur nowhere else, making it the most distinctive sub-region of
Sundaland." A Guide to the Dragonflies of Borneo by Albert G. Orr
GO FURTHER
Dragonflies are among the most beautiful of insects. Peninsular Malaysia and Singapore are home to more than 230 species (twice the number found in Europe). They include some of the most exquisite forms found anywhere in the World. FLORA Borneo has 150 species of wild fig trees. Most of them are found in forests of Sabah. FISHERIES Prawn farming is a main commercial activities in Tawau. Spawners from Tawau are graded the best in Malaysia. For decades, Tawau has been exporting high-grade tiger prawns to several countries such as Korea, Japan, Taiwan, China, Vietnam, Singapore, Egypt and Australia.
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Damselflies of Borneo |