Triacanthagyna septima
(Selys, 1857)
pale green darner, Pale-green Darner
Triacanthagyna septima, commonly known as the pale green darner, is a relatively small aeshnid found across the Americas from the southern United States through Central America to South America. measure 59–66 mm in length with a wingspan of 68–86 mm. The exhibits subtle , with females possessing three long, slender that may break off in mature individuals, causing them to resemble males.
Pronunciation
How to pronounce Triacanthagyna septima: /ˌtraɪ.akænˈθædʒɪnə ˈsɛptɪmə/
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Identification
Distinguished from other Triacanthagyna by the combination of relatively small size, pale green with brownish wash, and the specific pattern of green markings on abdominal segments 1–2. Females identified by presence of three long, slender (when intact); males and older females with broken cerci require careful examination of coloration (bluish-green in males, greenish-brown in females) and other subtle characters.
Images
Distribution
Recorded from southern Texas (USA) through Middle America to South America; specific records include Villavicencio (Colombia) and broader Caribbean region. GBIF distribution records indicate presence in Caribbean, Middle America, North America, and South America.
Similar Taxa
- Other Triacanthagyna speciesSimilar overall and coloration; T. septima distinguished by size, specific thoracic color pattern, and abdominal markings as described.
- Other Aeshnidae (darners)T. septima smaller than most darners; pale green and specific abdominal pattern distinguish it from larger, more vividly colored .