| Zygonyx iris | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Odonata |
| Infraorder: | Anisoptera |
| Family: | Libellulidae |
| Genus: | Zygonyx |
| Species: | Z. iris |
| Binomial name | |
| Zygonyx iris Selys, 1869 | |
Zygonyx iris, [2] the emerald cascader [3] or iridescent stream glider, [4] is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries. [5] [1] [6]
A number of subspecies of Zygonyx iris have been described, but it is not clear if these merely represent extremes of geographical variation or genuine subspecies. [1] [4]
It is a dark metallic blue dragonfly with brown eyes. Its thorax has broad humeral stripe in yellow. Its abdomen is black with sides of segments 1 to 3 broadly yellow. There is a yellow mid-dorsal carina from segments 1 to 6. There is a big yellow spot on segment 7. Female is similar to the male. [7]
It breeds in the swift rocky streams. Larva is adapted to cling on rocks. Females lay eggs in first order streams during summer. Apparently, the larva migrates to second or third order streams during their late instars from where they emerge. [8] [7] [9] [4] [3] Males commonly found flying over brooks and streams. They tirelessly fly back and forth across a beat along a hill stream and rarely perch. Sometimes, pairs in tandem can be seen flying above torrents; the female dipping her abdomen periodically to lay eggs [8] [7] [4]
Trithemis aurora, the crimson marsh glider, is a species of dragonfly in the family Libellulidae. It is a common and widely distributed species found throughout the year across the Indian subcontinent and Southeast Asia.
Prodasineura verticalis is a damselfly in the family Platycnemididae. It is commonly known as the red-striped black bambootail or black bambootail.
Lathrecista asiatica, the asiatic blood tail, is a species of dragonfly in the family Libellulidae. It is the only species in its genus. It is widespread, occurring from India to Australia.
The long-legged marsh glider or dancing dropwing is a species of dragonfly found in Asia.
Orthetrum triangulare is an Asian freshwater dragonfly species. The common name for this species is blue-tailed forest hawk. Two subspecies of Orthetrum triangulare are currently recognised, the nominate subspecies and O. t. malaccense.
Copera vittata is a species of damselfly in the family Platycnemididae. It is native to Asia, where it is widely distributed from India to Indonesia. It is known commonly as the blue bush dart. There are several subspecies and it may represent a species complex.
Lestes elatus is a species of damselfly in the family Lestidae, the spreadwings. It is known commonly as the emerald spreadwing. It is native to India, Thailand and Sri Lanka.
Amphiallagma parvum, little blue or azure dartlet, is a species of damselfly in the family Coenagrionidae. This species can be found in many South Asian countries including India, Sri Lanka, Myanmar, Thailand, Nepal, and probably in Bangladesh.
Pseudagrion rubriceps, saffron-faced blue dart, is a species of damselfly in the family Coenagrionidae. It is found in many tropical Asian countries.
Burmagomphus pyramidalis, the sinuate clubtail, is a species of dragonfly in the family Gomphidae. It is found in India and Sri Lanka. There are 2 subspecies, where they are geographically separated.
Aethriamanta brevipennis, scarlet marsh hawk, is a species of dragonfly in the family Libellulidae. It is found in many Asian countries.
Cratilla lineata, the line forest-skimmer, emerald-banded skimmer or pale-faced forest-skimmer, is a species of dragonfly in the family Libellulidae. It is found in many Asian countries.
Indothemis carnatica, the black marsh skimmer, or light-tipped demon, is a species of dragonfly in the family Libellulidae. It is found in India, Sri Lanka and Thailand.
Indothemis limbata, the restless demon, is a species of dragonfly in the family Libellulidae. It is found in India, Sri Lanka, Myanmar, Singapore and Thailand. Two subspecies can be found.
Neurothemis intermedia, the paddyfield parasol, is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries. Four subspecies are recognized.
Urothemis signata, the greater crimson glider, is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries. A number of subspecies are recognized for this species.
Macromidia donaldi is a species of dragonfly in the family Synthemistidae. It is known only from the Western Ghats of India and from Sri Lanka.
Onychothemis testacea, the stellate river hawk, or riverhawker, is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries.
Tetrathemis platyptera, the pigmy skimmer, is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries and locally common over much of its range.
Dysphaea ethela, the black torrent dart, is a species of damselfly in the family Euphaeidae. The insect is named after Frederic Charles Fraser's wife, Ethel Grace Fraser (1881-1960), a constant companion of his collecting trips in India.
Media related to Zygonyx iris at Wikimedia Commons