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Double-striped Bluet
Enallagma basidens
The double-striped bluet (Enallagma basidens) is a species of damselfly in the family Coenagrionidae. This species grows to lengths 21–28 mm. Its common name from the peculiar black shoulder stripe, which is divided in two by a thin blue stripe. This is the key identification characteristic; no other damselfly has a shoulder stripe that looks like this one.
Mature males have an abdomen that alternates black and blue. The final segment of the abdomen is blue below and black above, while segments 8 and 9 are all blue. Females and immatures are tan to olive or brown, but like the mature males they have the divided shoulder stripe.
From the article Double-striped bluet on Wikipedia (CC BY-SA), quoted section by section
Range & habitat
Mexico: Tamaulipas, San Luis Potosí, Nuevo León, Coahuila, Chihuahua, Baja California United States: (Alabama • Arkansas • Arizona • California • Colorado • Delaware • Florida • Georgia • Iowa • Illinois • Indiana • Kansas • Kentucky • Louisiana • Maryland • Michigan • Missouri • Mississippi • Nebraska • North Carolina • New Jersey • New Mexico • Ohio • Pennsylvania • South Carolina • Tennessee • Texas • Vermont • Wisconsin • West Virginia) Canada: (Ontario)
Wikipedia: “Distribution”
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Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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Every page naming Enallagma basidens in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 99892.