Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Cladus: Odonatoptera
Cladus: Holodonata
Ordo: Odonata
Subordo: Epiprocta
Infraordo: Anisoptera
Superfamilia: Aeshnoidea
Familia: Aeshnidae
Subfamilia: Aeshninae
Tribus: Gynacanthini
Genus: Triacanthagyna
Species: Triacanthagyna septima
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
Paulson, Dennis R. (2009). Dragonflies and Damselflies of the West. Princeton University Press. p. 203. ISBN 0-691-12281-4.
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