Biology:Triacanthagyna septima

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Short description: Species of dragonfly

Triacanthagyna septima
Triacanthagyna septima 28261605.jpg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Aeshnidae
Genus: Triacanthagyna
Species:
T. septima
Binomial name
Triacanthagyna septima
(Selys in Sagra, 1857)

Triacanthagyna septima, the pale green darner, is a species of dragonfly in the family Aeshnidae. It is found in southern Texas.[1]

Description

Triacanthagyna septima is a relatively small darner growing to a total length of 59 to 66 mm (2.3 to 2.6 in) with a wingspan of 68 to 86 mm (2.7 to 3.4 in). The head of the male is olive and the eyes bluish-green. The thorax is pale green with a brownish wash on the front and the legs are pale. The abdomen is mostly brown, segments 1 and 2 having greenish sides and a slender greenish dorsal stripe. The female is very similar in coloration to the male but has greenish-brown eyes and has three long, slender cerci (appendages) on the last segment. These may break off in mature individuals which then closely resemble males.[1]

References

  1. 1.0 1.1 Paulson, Dennis R. (2009). Dragonflies and Damselflies of the West. Princeton University Press. p. 203. ISBN 0-691-12281-4. https://books.google.com/books?id=wnX1nJSmFfAC&pg=PA203. 

Wikidata ☰ Q2734967 entry