CreatureData

Mercury bluet

Coenagrion mercuriale (Charpentier, 1840)

Status not recordeddragonflies

The mercury bluet (Coenagrion mercuriale) is a species in the family Coenagrionidae, order Odonata. Recorded adults reach 3.1 cm in length.

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Quick facts about the mercury bluet

Weight
Not recorded
Length
2.7 cm – 3.1 cm
Lifespan
Not recorded
Diet
Invertivore
Main food
Not recorded
Habitat
freshwater, riverine
Young per litter or clutch
Not recorded
Active
By day (diurnal)
Generations a year
One every two years or more
Conservation status
Not recorded
Countries on record
Not recorded

How big is the mercury bluet?

MERCURY BLUET · LENGTH 3.1 CMADULT HUMAN · HEIGHT 1.7 M
At 3.1 cm, the recorded maximum length of the mercury bluet is about 1.8% of the height of an adult human (1.7 m, a fixed reference used for scale).

Where does the mercury bluet live?

Not recorded

Is the mercury bluet endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the mercury bluet classified?

  1. kingdomAnimalia
  2. phylumArthropoda
  3. classInsecta
  4. orderOdonata
  5. familyCoenagrionidae
  6. genusCoenagrion
  7. SpeciesCoenagrion mercuriale (Charpentier, 1840)

Synonyms Agrion fonscolombii, Agrion hermeticum, Agrion mercuriale, Enallagma mercuriale

Other names and names in other languages (24)
  • Southern blue damselflyEnglish
  • Southern CoenagrionEnglish
  • Southern damselflyEnglish
  • Southern DamsleflyEnglish
  • Donzell mercurialCatalan
  • šidélko přilbovitéCzech
  • Coenagrion BenfroWelsh
  • HelmazurjungferGerman
  • Agrion de MercurioSpanish
  • Agrion de MercureFrench
  • Donceliña de MercurioGalician
  • Zapadna vodendjevojčicaCroatian
  • Azzurrina di MercurioItalian
  • MercuurwaterjufferDutch
  • Libelinha de MercúrioPortuguese
  • Стрелка южнаяRussian
  • šidielko veľkoškvrnnéSlovak
  • Brzični škratecSlovenian
  • Pilivesa jugoreAlbanian
  • Стрілка МеркуріяUkrainian
  • Mursen Las PenfroWelsh
  • Mursennod Glas PenfroWelsh
  • Helm-AzurjungferGerman
  • Azulado de MercurioSpanish

Catalogue of Life

Relatives of the mercury bluet

Other species in the same genus Coenagrion.

Dainty bluet

Coenagrion scitulum

CoenagrionidaeNo free photo yet

Dark bluet

Coenagrion armatum

CoenagrionidaeNo free photo yet

CompareMercury bluet vs Azure damselflyMercury bluet vs Variable bluetMercury bluet vs Spearhead bluetMercury bluet vs Dainty bluet

Common questions

Answered only where our data holds the answer.

How big is the mercury bluet?

An adult mercury bluet measures 2.7 cm – 3.1 cm long, according to values recorded on Wikidata.

What kind of animal is the mercury bluet?

The mercury bluet (Coenagrion mercuriale) belongs to the family Coenagrionidae in the order Odonata.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Mercury bluet (Coenagrion mercuriale). Retrieved from https://creaturedata.com/animals/mercury-bluet

MLA

“Mercury bluet (Coenagrion mercuriale).” CreatureData, 2026, https://creaturedata.com/animals/mercury-bluet.

BibTeX
@misc{mercury_bluet_2026,
  title = {Mercury bluet (Coenagrion mercuriale)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/mercury-bluet},
  note = {Data as of 2026-11-11}
}