Pelecorhynchidae

Definition

A small family of true flies (Diptera) comprising approximately 50 species in five genera, most notably Pelecorhynchus. Adults are medium-sized, often metallic, and primarily nectar-feeding on flowers of Leptospermum and related myrtaceous plants; larvae are terrestrial predators in damp marginal habitats, feeding on earthworms. The family's separation from the related snipe flies (Rhagionidae) remains taxonomically contested, with molecular and morphological studies yielding conflicting placements.

Etymology

From the type genus Pelecorhynchus (Greek pelekys 'axe' + rhynchos 'snout', referring to the broad, axe-like proboscis of adults) + Latin -idae family suffix.

Example

Pelecorhynchus fulvus adults are active pollinators of tea-tree blossoms in Australian sclerophyll forests, while their semi-aquatic larvae prey on lumbricid earthworms in saturated riparian soils.

Synonyms

• Pelecorhynchidae (family)

Related Terms

• Rhagionidae
• Diptera
• Brachycera
• Tabanomorpha
• Leptospermum
• sclerophyll
• earthworm predation
• riparian habitat

Usage Notes

Specialists vary in treating this group as a distinct family or as a subfamily (Pelecorhynchinae) within Rhagionidae; current molecular phylogenies increasingly support familial status. The family is restricted to the Southern Hemisphere, with greatest diversity in Australia and Chile. Not to be confused with the superficially similar horse flies (Tabanidae) or other rhagionoid families.