Overview

Distribution

occurs (regularly, as a native taxon) in multiple nations

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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: (20,000-2,500,000 square km (about 8000-1,000,000 square miles)) All new World populations of Enallagma cyathigerum now considered distinct from Old World populations; New World populations now placed under Enallagma annexum (still common name Northern Bluet), while Old World populations maintained under Enallagma cyathigerum (Turgeon et al., 2005). As such, range of this species is across North America throughout the Nearctic.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Enallagma annexum

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Enallagma annexum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 10
Specimens with Barcodes: 19
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: N5 - Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Reasons: All new World populations of Enallagma cyathigerum now considered distinct from Old World populations; New World populations now placed under Enallagma annexum (still common name Northern Bluet), while Old World populations maintained under Enallagma cyathigerum (Turgeon et al., 2005). As such, range of this species is across North America throughout the Nearctic.

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Wikipedia

Enallagma annexum

The Northern Bluet (Enallagma annexum) is a species of damselfly in the family Coenagrionidae. Enallagma annexum was formerly included with Enallagma cyathigerum.

Identification[edit]

Male, topview

The Northern Bluet is a small damselfly with a length of 1 to 1.6 inches (26 to 40 mm) long. The male is predominately blue on the sides of its thorax, and the upper side of its abdomen.[1] Its lower abdominal appendages are longer than its upper appendages. The female's body is greenish-yellow to brown color. The upper side of its abdomen is mostly black.[2]

Flight season[edit]

Northern Bluets have a flight season of early May to July.[1]

Similar species[edit]

Like many bluets in the genus Enallagma many species look similar to each other. The Northern Bluet looks has similar to many bluet species.[1] They include the Boreal Bluet, Familiar Bluet, Hagen's Bluet, Marsh Bluet, and Vernal Bluet. It can be distinguished from Familiar Bluet by the large postocular spots and the shorter cerci. The characteristics shared by Northern and Boreal Bluets are their large eyespots, and a mushroom-shaped black spot on abdominal segment S2. Its best seen dorsally.

References[edit]

  1. ^ a b c DuBois, B. (2003) Damselfles of the North Woods. Duluth, MN:Kollath+Stensaas
  2. ^ Lam, E. (2004) Damselflies of the Northeast. Forest Hills, NY:Biodiversity Books. p. 77.
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Names and Taxonomy

Taxonomy

Comments: This genus is in need of thorough taxonomic and phylogenetic study; some of the subgroups may deserve taxonomic recognition (Westfall and May, 1996). All new World populations of Enallagma cyathigerum now considered distinct from Old World populations; New World populations now placed under Enallagma annexum (still common name Northern Bluet), while Old World populations maintained under Enallagma cyathigerum (Turgeon et al., 2005).

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