Family Protoneuridae
Prodasineura autumnalis
(Fraser, 1922)
Elevation 80 - 800m
Abdomen Length 29-31mm
The Black Threadtail is found on Phewa Taal in dense shrubbery. It is fairly widespread in South Asia and even in Sumatra and Borneo but never very common when found. A lake is a perfect place for this slow-moving but fast to disappear damselfly. It is black in color with a bronzed shine on the dorsum of the thorax and with white rings at abdomen segments 3-7. It is seen mostly from May, June, and August in the monsoon season. Below are photos of a juvenile male, male, and female.
Juvenile male
Male
Female
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