Onychogomphus acinaces

Onychogomphus acinaces[2] is a species of dragonfly in the family Gomphidae. It is endemic to the streams of Western Ghats of India.[1][3]

Onychogomphus acinaces
Male

Data Deficient  (IUCN 3.1)[1]
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Odonata
Family:
Gomphidae
Genus:
Onychogomphus
Species:
O. acinaces
Binomial name
Onychogomphus acinaces
Laidlaw, 1922

Description and habitat

It is a medium-sized dragonfly with bottle-green eyes. Its thorax black, marked with greenish-yellow. There is a mesothoracic collar and an oblique ante-humeral stripe. Sides are greenish-yellow with a broad median black stripe on each side. Abdomen is black, marked with greenish-yellow. Segment 1 has an apical triangular spot, and an apical lateral spot. Segment 2 has two large yellow lateral spots. Segment 3 has a large basal spot. Segments 4 to 6 have smaller spots. Segment 7 has its basal half yellow. Segment 8 has only a basal spot on the sides. Segments 9 and 10 are unmarked. Anal appendages are black. Superior appendages have the upper and outer surfaces bright yellow. They truncate, tapering sinuously backwards and sloping slightly downwards towards the apices. The inferior appendage is slightly longer, divided into two closely parallel branches and the distal halves curved upwards. It can be distinguished from all other species of this genus by the shape of the anal appendages.[4][5][6][7]

It is commonly found in shallow mountain streams. It breeds in deep pools in those streams.[5]

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See also
  • List of odonates of India
  • List of odonata of Kerala

References
  1. Dow, R.A. (2009). "Onychogomphus acinaces". IUCN Red List of Threatened Species. 2011: e.T163645A5629088. doi:10.2305/IUCN.UK.2009-2.RLTS.T163645A5629088.en.
  2. Martin Schorr; Dennis Paulson. "World Odonata List". University of Puget Sound. Retrieved 12 Oct 2018.
  3. K.A., Subramanian; K.G., Emiliyamma; R., Babu; C., Radhakrishnan; S.S., Talmale (2018). Atlas of Odonata (Insecta) of the Western Ghats, India. Zoological Survey of India. pp. 244–245. ISBN 9788181714954.
  4. "Onychogomphus acinaces Laidlaw, 1922". India Biodiversity Portal. Retrieved 2017-02-11.
  5. C FC Lt. Fraser (1934). The Fauna of British India, including Ceylon and Burma, Odonata Vol. II. Red Lion Court, Fleet Street, London: Taylor and Francis. pp. 280–282.
  6. C FC Lt. Fraser (1924). A Survey of the Odonate (Dragonfly) Fauna of Western India and Descriptions of Thirty New Species (PDF). p. 477.
  7. M. Rathod, Darshana; Parasharya, B.M.; Talmale, S.S. (2016). "Odonata (Insecta) diversity of southern Gujarat, India". Journal of Threatened Taxa. 8 (11): 9339–9349. doi:10.11609/jott.2609.8.11.9339-9349.


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