Marsh Bluet
Enallagma ebrium
This record describes Enallagma ebrium (species). Recorded family: Coenagrionidae. Recorded order: Odonata.
Identification and Appearance
Mostly blue bluet with segment 7 almost totally black and segment 6 half black. Black spots on other segments approximately equal sized.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Odonata (Dragonflies and Damselflies)
- Suborder
- Zygoptera
- Family
- Coenagrionidae (Narrow-winged Damselflies)
- Genus
- Enallagma (American Bluets)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Marshy ponds
Geographic Range
Northern tier of states in US
Seasonal Activity
June to August
About Dragonflies and Damselflies: the wider group
Order-level background for Odonata, the group containing Enallagma ebrium. Species-specific details appear above.
Group overview
Odonata includes ~6,000 described species of dragonflies and damselflies. Dragonflies are among the fastest flying insects, reaching 36 mph (58 km/h). They can fly in any direction including backward, and hover in place - each wing operates independently.
Ecological role of the group
Dragonflies predate dinosaurs by nearly 100 million years - fossils date to 325 million years ago. The largest dragonfly ancestor, Meganeuropsis permiana (285 mya), had a 75cm wingspan, enabled by atmospheric oxygen levels of 31-35% compared to today's 21%. Dragonflies have a 95% hunting success rate - the highest of any predator.
Economic and practical significance of the group
Dragonflies are voracious predators that consume hundreds of mosquitoes daily, providing natural pest control worth millions in reduced mosquito-borne disease risk. A single dragonfly can eat 30 to hundreds of mosquitoes per day.
Recorded sources for this group: Natural History Museum London, Britannica, fossil record research. Imported estimates may describe particular regions or reporting periods.
Photos of Marsh Bluet (5)
Photo credits: Contributed by john and jane balaban
Frequently Asked Questions About Marsh Bluet
What is Marsh Bluet?
Marsh Bluet (Enallagma ebrium) is a species in the family Coenagrionidae, within the order Odonata.
How big is Marsh Bluet?
25-34 mm
How do you identify Marsh Bluet?
Mostly blue bluet with segment 7 almost totally black and segment 6 half black. Black spots on other segments approximately equal sized.
Where is Marsh Bluet found?
| Feature | Details |
|---|---|
| Habitat | Marshy ponds |
| Range | Northern tier of states in US |
When is Marsh Bluet active?
Marsh Bluet: seasonal activity - June to August.