Northern Bluet - Enallagma annexum (Hagen, 1861)

This is a species of concern. Please report any encounters to Odonata Central.

Range & Habitat:

Recorded from northern counties where it is found in bigs and fens along the Kittatinny Ridge and in the highlands.


Flight Season:
Early Date: 18 May
Late Date: 9 July

Flight season charts created from records in the official database maintained by Allen Barlow.

Male Lateral - Photo by Jim Bangma
Click on a thumbnail to view full-size photo

Largely blue, with a relatively narrow black humeral stripe, it is virtually identical to the less common Boreal Bluet. The postocular spots are large and rounded-triangular, narrowly separated from a thin occipital bar. Recently split from the Palearctic E. cyathegerum.

Can be distinguished from Familiar Bluet by the large postocular spots and the shorter cerci. Can be told from the Hagen's/Marsh complex by the size and shape of the postocular spots and possibly by the nearly all black S10.

Conservation Status:
State: S2 Imperiled in New Jersey
Global: G5 Secure globally, but possibly rare in parts of its range