Harman Patil

Enallagma cyathigerum

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Kingdom  Animalia
Order  Odonata
Family  Coenagrionidae
Scientific name  Enallagma cyathigerum
Higher classification  Enallagma
Phylum  Arthropoda
Suborder  Zygoptera
Genus  Enallagma
Rank  Species
Enallagma cyathigerum Enallagma cyathigerum female
Similar  Damselfly, Enallagma, Insect, Odonate, Blue‑tailed damselfly

Damselfly adult enallagma cyathigerum


Enallagma cyathigerum (common blue damselfly, common bluet, or northern bluet) is a European damselfly. The species can reach a length of 32 to 35 mm (1.3 to 1.4 in). It is common in all of Europe, except for Iceland.

Contents

Enallagma cyathigerum Enallagma cyathigerum

Blue damselfly enallagma cyathigerum glermeyjar vatnaskord r flugur


Identification

Enallagma cyathigerum httpsuploadwikimediaorgwikipediacommonsthu

The common blue damselfly can be easily mistaken for the azure damselfly (Coenagrion puella), but on the back and the thorax, the common blue damselfly has more blue than black; for the azure damselfly it is the other way around. The second segment of the thorax has a distinctive spot with a line below connecting to the third segment.

Enallagma cyathigerum FileEnallagma cyathigerum 1lozjpg Wikipedia

Another difference can be observed when inspecting the side of the thorax. The common blue damselfly has only one small black stripe there, while all other blue damselflies have two. A male is blue while a female is brown on a common blue damselfly.

Enallagma cyathigerum Common Blue Damselfly britishdragonfliesorguk

During mating, the male clasps the female by her neck while she bends her body around to his reproductive organs – this is called a mating wheel. The pair flies together over the water and eggs are laid within a suitable plant, just below the surface.

Enallagma cyathigerum Common Blue Damselfly Enallagma cyathigerum NatureSpot

The eggs hatch and the larvae, called nymphs, live in the water and feed on small aquatic animals. Nymphs climb out of the water up a suitable stem to moult into damselflies.

Behaviour

Enallagma cyathigerum FileEnallagma cyathigerum common blue damselflyjpg Wikimedia

This small, brightly coloured damselfly is probably the most common of dragonflies and damselflies throughout much of Britain. It inhabits a wide range of habitats, from small ponds to rivers. They are especially common at lakes and reservoirs. Once the damselflies are in tandem and perched, the female can swing her abdomen to initiate pairing.

Enallagma cyathigerum FileEnallagma cyathigerum 8lozjpg Wikimedia Commons

This damselfly requires a close look for a beginner to distinguish them from an azure damselfly. Typically, they fly low through the reeds and often fly well out over the water, unlike azure damselflies. They are also a brighter blue.

Enallagma cyathigerum Enallagma Charpentier 1840 Checklist View

References

Enallagma cyathigerum Wikipedia


Similar Topics
Damselfly
Enallagma
Insect
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