Orthetrum triangulare

{{Speciesbox

| image = Dragon Fly (Orthetrum triangulare) (7976467260).jpg

| image_alt =

| image_caption = O. t. triangulare, male

| genus = Orthetrum

| species = triangulare

| authority = (Selys, 1878)

| status = LC | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Dow, R.A. |date=2010 |title=Orthetrum triangulare |volume=2010 |page=e.T167098A6301833 |doi=10.2305/IUCN.UK.2010-4.RLTS.T167098A6301833.en |access-date=19 November 2021}}

| synonyms = Orthetrum chandrabali {{small|Mehrotra, 1961}}

}}

Orthetrum triangulare{{World Odonata List}} is an Asian freshwater dragonfly species. The common name for this species is blue-tailed forest hawk.{{cite book|last=Subramanian|first=K. A.|title=Dragonflies and Damselflies of Peninsular India|year=2005|url=http://www.ias.ac.in/initiat/sci_ed/lifescape/odonates-dragonflies.pdf}}{{cite web

|url=http://indiabiodiversity.org/species/show/234380|title=Orthetrum triangulare Selys, 1878|publisher=India Biodiversity Portal|access-date=2017-02-15}}{{cite web

|url=http://www.indianodonata.org/sp/618/Orthetrum-triangulare|title=Orthetrum triangulare Selys, 1878|publisher=Odonata of India, v. 1.00. Indian Foundation for Butterflies|access-date=2017-02-15}}{{cite book |last1=K.A. |first1=Subramanian |last2=K.G. |first2=Emiliyamma |last3=R. |first3=Babu |last4=C. |first4=Radhakrishnan |last5=S.S. |first5=Talmale |title=Atlas of Odonata (Insecta) of the Western Ghats, India |date=2018 |publisher=Zoological Survey of India |isbn=9788181714954|pages=361–362}} Two subspecies of Orthetrum triangulare are currently recognised, the nominate subspecies and O. t. malaccense.

Description and habitat

It is a medium-sized dragonfly with dark face and bluish eyes. Its thorax is also black with a broad apple green stripe on both sides. Segments 1-2 and 8–10 in the abdomen are black and the remaining segments are pruinosed with azure blue. It is usually found in marshes associated with hill streams where it breeds.{{cite book|author=C FC Lt. Fraser|author-link=Frederic Charles Fraser|title=The Fauna of British India, including Ceylon and Burma, Odonata Vol. III|publisher=Taylor and Francis|location=Red Lion Court, Fleet Street, London|year=1936|pages=[https://archive.org/details/FraserOdonata3/page/n316 305]–307|url=https://archive.org/details/FraserOdonata3}}{{cite book|author=C FC Lt. Fraser|author-link=Frederic Charles Fraser|title=A Survey of the Odonate (Dragonfly) Fauna of Western India and Descriptions of Thirty New Species|year=1924|pages=433|url=http://faunaofindia.nic.in/PDFVolumes/records/026/05/0423-0522.pdf}}

File:Orthetrum triangulare by Rohit George.jpg|O. t. triangulare, female

File:Orthetrumtriangularefemale4.jpg|O. t. triangulare, female

File:Orthetrum triangulare mating (2011) 2474.jpg|O. t. triangulare, mating pair

File:Orthetrum melania (male s4).JPG|O. t. malaccense, male

File:Orthetrum melania (male young s3).JPG|O. t. malaccense, young male

File:Orthetrum melania (female s3).JPG|O. t. malaccense, female