Enallagma durum

(Hagen, 1861)

big bluet

Enallagma durum, the big bluet, is a of in the . It occurs in northern Mexico and the southern and eastern United States. The IUCN lists it as Least Concern with a stable . As a member of the Enallagma, it shares characteristics with other bluet , though specific ecological details for this species remain limited in published sources.

Enallagma durum by the Smithsonian. Used under a CC0 license.

Enallagma durum 331788106 by David Dodd. Used under a CC BY 4.0 license.

Pronunciation

How to pronounce Enallagma durum: /ɛnˈæləɡmə ˈdʊrəm/

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Identification

The "big bluet" suggests larger size relative to other bluet (Enallagma spp.), though specific diagnostic features distinguishing E. durum from such as E. civile (familiar bluet) are not detailed in available sources. Accurate identification likely requires examination of male appendages and female mesostigmal plates, standard for the .

Images

Distribution

Northern Mexico and southern and eastern United States. Distribution records include Vermont.

Similar Taxa

Enallagma civileBoth are in the Enallagma with overlapping North ranges; E. civile (familiar bluet) is a widespread that has been studied for climate change responses, while E. durum is distinguished by its larger size and more restricted distribution pattern.

More Details

Taxonomic authority

Originally described as Agrion durum by Hagen in 1861; later transferred to Enallagma.