Green-eyed skimmers

Definition

A common name for dragonflies of the family Corduliidae, characterized by metallic green, blue, or brown bodies and often striking green eyes in mature adults. Members are typically medium-sized, perch with wings held horizontally, and are associated with streams, rivers, and lakes in temperate regions. The family includes baskettails and emeralds.

Etymology

From the distinctive green compound eyes of many adult corduliids and 'skimmer,' a general term for dragonflies (suborder Anisoptera) that skim low over water surfaces.

Example

The common green darner (Anax junius) is often mistaken for a green-eyed skimmer, but true corduliids such as the American emerald (Cordulia shurtleffii) have a more compact build and lack the darner's bold thoracic stripes.

Synonyms

• Corduliidae
• baskettails
• emeralds

Related Terms

• Anisoptera
• dragonfly
• compound eye
• metallic coloration
• lotic habitat
• Odonata

Usage Notes

The term is primarily North American vernacular; 'emeralds' is preferred in European contexts. Not all Corduliidae have green eyes—some species have blue or brown eyes, and teneral individuals lack metallic coloration. Distinguished from other skimmer families (Libellulidae, the 'skimmers' proper) by wing venation and the presence of a brown or black basal spot on the hindwing in many species.