Coenagrionidae

Definition

The largest family of damselflies (suborder Zygoptera), commonly called pond damselflies, characterized by slender bodies, narrow wings typically folded together above the abdomen at rest, and aquatic nymphal stages. With more than 1,300 described species, this family comprises roughly half of all damselfly diversity and is divided into six subfamilies: Agriocnemidinae, Argiinae, Coenagrioninae, Ischnurinae, Leptobasinae, and Pseudagrioninae.

Etymology

From the type genus Coenagrion (Greek koinos 'common' + agrion 'wild, field-dwelling') + -idae (family suffix).

Example

The familiar bluets (genus Enallagma) and forktails (genus Ischnura) of North American ponds and streams belong to Coenagrionidae, where males often display bright blue, red, or green coloration used in mate recognition.

Synonyms

• pond damselflies

Related Terms

• Zygoptera
• Odonata
• damselfly
• dragonfly
• Anisoptera
• Coenagrionoidea
• Enallagma
• Ischnura

Usage Notes

Coenagrionidae is distinguished from other Zygoptera families (e.g., Calopterygidae, Lestidae) by wing venation details and larval gill structure; 'pond damselfly' reflects habitat preference but is not exclusive, as members occupy streams and marshes. The family's enormous size and morphological diversity make it a frequent subject of phylogenetic revision; subfamily boundaries remain active research areas. Contrast with Calopterygidae (broad-winged damselflies), whose wings are typically spread or only partially closed at rest.