Austropetaliidae

Definition

A small family of dragonflies (order Odonata) distributed disjunctly in southern South America (Chile, Argentina) and Australia. Members are medium-sized to large odonates formerly grouped within Corduliidae or treated as a distinct lineage based on larval and adult morphology; the family represents a Gondwanan relict distribution.

Etymology

Example

The southern petaltail, Archipetalia auriculata, is a representative Australian species of Austropetaliidae, while the Chilean genera such as Hypopetalia occupy stream habitats in the Andes.

Related Terms

• Odonata
• Anisoptera
• Corduliidae
• Gondwanan distribution
• petaltail
• dragonfly systematics

Usage Notes

Established as a family by Carle and Louton in 1994; sometimes still treated as a subfamily (Austropetaliinae) within Corduliidae in older literature. The disjunct southern temperate distribution is biogeographically significant and used as evidence for vicariance following continental drift.