Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Enallagma vesperum - Vesper Bluet

Vesper Bluet in New Brunswick - Enallagma vesperum - male Vesper Bluet? - Enallagma vesperum - male Id help needed - spreadwing damselfly. - Enallagma vesperum Enallagma exsulans - Enallagma vesperum Vesper Bluet - Enallagma vesperum - female Enallagma vesperum NJ July - Enallagma vesperum Female Damselfly?  - Enallagma vesperum - female cerci Vesper Bluet - Enallagma vesperum - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Odonata (Dragonflies and Damselflies)
Suborder Zygoptera (Damselflies)
Family Coenagrionidae (Narrow-winged Damselflies)
Genus Enallagma (American Bluets)
Species vesperum (Vesper Bluet)
32-35 mm
Male: Bright yellow thorax. Black lateral thoracic stripe is quite thin or may barely be present at all. The abdomen is tipped in blue. Specifically, abdominal segment 10 is blue on the sides, while segment 9 is completely blue. Large green eyespots.

Female. Similar to the male, but with bright yellow replaced by bright green. Abdominal segment 10 is pale blue and segment 9 is pale blue on the sides and dark on the dorsal surface.
New Brunswick, Nova Scotia, Ontario, Quebec, and the Eastern United States from Maine to Florida and as far west as Colorado and Texas.
Preferred habitat includes small lakes with lots of floating vegetation. Occasionally found at slow-moving streams.
Most commonly seen in June through early September.
Tiny flying insects.
Its crepuscular habits gave it its common name. Crepuscular habits also mean this attractive species is often overlooked.
Print References
Internet References
Odonata of New Jersey Pictures male, female, tandem pair

Dragonflies and Damselflies of West Virginia Several enlarged photos help identification
Works Cited
1.Damselflies of North America
Minter J., Jr Westfall, Michael L. May. 1996. Scientific Pub.
2.Damselflies of the Northeast
Ed Lam. 2004. Biodiversity Books.