Black stream glider
Male in Cyprus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Libellulidae
Genus: Trithemis
Species:
T. festiva
Binomial name
Trithemis festiva
(Rambur, 1842)
Synonyms
  • Libellula infernalis Brauer, 1865
  • Trithemis prosperina Selys, 1878

The black stream glider (Trithemis festiva),[2][3][4][5] also known as the indigo dropwing[3][4][5] is a species of dragonfly in the family Libellulidae. It is a very widespread species, occurring from Greece, Cyprus and Turkey, throughout Asia to New Guinea.[1][6]

Description

Black stream glider is a medium-sized dragonfly with purple color on its body structure.[7][3][4][5]

In the male, the frontal area appears darker purplish grey. The eyes are dark brown above, with a purple colored tinge, which is bluish grey, lateral and beneath. The thorax is black, covered with purple pruinescence, which helps it appear deep blue. The legs are black and wings are transparent with a dark opaque brown mark at the base of hind wing, with a black spot on tip of the wing. The abdomen is covered with fine blue pruinescence.[7][3][4][5]

The female looks brown in the front and extends above. The eyes are dark brown above and appear more grey-ish below. Thorax is greenish-yellow to olivaceous, with the presence of a medial dark brown lateral stripe. In addition, a Y-shaped inverted stripes can be observed on the sides. Legs are black with anterior femora being yellow on the inner side. Wings are transparent with dark reddish-brown tip with a black spot, similar to the male. The abdomen appears bright yellow with medial, lateral and ventral stripes, colored black, however, the medial and lateral black stripes form a confluence at abdominal segments to enclose a wedge-shaped yellow spot.[7][3][4][5]

Habitat

This dragonfly is commonly seen and has been mostly observed near slow flowing streams and canals, accompanying dense forest ranges. It usually perches on boulders adjacent to streams, rivers and canals. They have also been witnessed perched on tip of aquatic plants, dried plants and similar plants that grow near banks of a sluggish steam or river.[3][7][8][4][5]

References

  1. 1 2 Dow, R.A. (2020). "Trithemis festiva". IUCN Red List of Threatened Species. 2020: e.T163609A140604365. doi:10.2305/IUCN.UK.2020-3.RLTS.T163609A140604365.en. Retrieved 20 November 2021.
  2. ↑ Paulson, D.; Schorr, M.; Abbott, J.; Bota-Sierra, C.; Deliry, C.; Dijkstra, K.-D.; Lozano, F. (2023). "World Odonata List". OdonataCentral, University of Alabama. Retrieved 14 Mar 2023.
  3. 1 2 3 4 5 6 Subramanian, K. A. (2005). Dragonflies and Damselflies of Peninsular India (PDF).
  4. 1 2 3 4 5 6 "Trithemis festiva Rambur, 1842". India Biodiversity Portal. Retrieved 2017-02-17.
  5. 1 2 3 4 5 6 "Trithemis festiva Rambur, 1842". Odonata of India, v. 1.00. Indian Foundation for Butterflies. Retrieved 2017-02-17.
  6. ↑ 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. 391–392. ISBN 9788181714954.
  7. 1 2 3 4 C FC Lt. Fraser (1936). The Fauna of British India, including Ceylon and Burma, Odonata Vol. III. Red Lion Court, Fleet Street, London: Taylor and Francis. pp. 387–389.
  8. ↑ C FC Lt. Fraser (1924). A Survey of the Odonate (Dragonfly) Fauna of Western India and Descriptions of Thirty New Species (PDF). p. 439.

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