| Onychargia atrocyana | |
|---|---|
| | |
| Male | |
| | |
| Female | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Odonata |
| Suborder: | Zygoptera |
| Family: | Platycnemididae |
| Genus: | Onychargia |
| Species: | O. atrocyana |
| Binomial name | |
| Onychargia atrocyana Selys, 1865 | |
Onychargia atrocyana [2] [1] a species damselfly in the family Platycnemididae. This species is commonly known as the marsh dancer or black marsh dart. [3] [4] It is found in Asia: Bangladesh, China, Hong Kong, Indonesia, India, Sri Lanka, Myanmar, Malaysia, Philippines, Peninsular Malaysia, Singapore, Thailand, Viet Nam. [1] [5]
It is a medium sized damselfly with velvet-black head, thorax and black-capped brown eyes. The dorsum of the thorax has narrow citron-yellow ante humeral stripes in the sub-adult and teneral stage. The sides are citron-yellow, marked with a broad oblique black stripe over the postero-lateral suture in that stage. But all these marks are obscured by pruinescence in adults. Abdomen is black, unmarked in the adult; but with narrow bluish basal rings on segments 3 to 6. There are yellow marks on the lateral sides of segment 1 and 2 in sub-adults. Female is similar to the sub-adult male with yellow marks. [6]
It breeds in ponds and marshes in forests. [6] [7] [8] [3] [4]