| 词条 | Triacanthagyna septima |
| 释义 |
| name = Pale green darner | image = | regnum = Animalia | phylum = Arthropoda | classis = Insecta | ordo = Odonata | subordo = Anisoptera | familia = Aeshnidae | genus = Triacanthagyna | species = T. septima | binomial = Triacanthagyna septima | binomial_authority= (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] DescriptionTriacanthagyna septima is a relatively small darner growing to a total length of {{convert|59|to|66|mm|1|abbr=on}} with a wingspan of {{convert|68|to|86|mm|1|abbr=on}}. 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]References1. ^1 {{cite book|last=Paulson|first=Dennis R.|title=Dragonflies and Damselflies of the West |year=2009 |publisher=Princeton University Press |isbn=0-691-12281-4 |page=203 |url=https://books.google.com/books?id=wnX1nJSmFfAC&pg=PA203}} {{Taxonbar|from=Q2734967}} 2 : Aeshnidae|Insects described in 1857 |
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