Hagen's Bluet - Enallagma hageni (Walsh, 1863)

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

Range & Habitat:

Fairly common in season throughout the northern highlands and valley & ridge, it has been recorded into the piedmont as well. It should be looked for in other northwestern counties.


Flight Season:
Early Date: 22 May
Late Date: 31 August

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, it is almost identical to the less common Marsh Bluet, and must be identified by critical examination of the terminal appendages. Told from bluets such as Boreal, Northern and Familiar by the teardrop shaped postocular spots and small occipital bar. Possibly can be told from the Northern/Boreal complex by the blue sides to S10


Conservation Status:
State: S2S3 Rare to imperiled in New Jersey
Global: G5 Secure globally, but possibly rare in parts of its range