Oxaeidae

Definition

A small family of solitary bees in the order Hymenoptera, characterized by large body size, unusually long mouthparts adapted for nectar feeding from deep floral tubes, and a primarily Neotropical distribution. Members exhibit distinctive wing venation and nesting behavior that includes excavating burrows in soil or rotting wood.

Etymology

From the type genus Oxaea, itself derived from Greek oxys (sharp, pointed), likely referring to the elongated mouthparts.

Example

Oxaea flavescens, a large metallic green bee in this family, possesses mouthparts nearly as long as its body to access nectar from long-tubed flowers in tropical dry forests.

Related Terms

• Anthophoridae
• Apoidea
• solitary bee
• long-tongued bee
• neotropical pollinator

Usage Notes

Formerly treated as a subfamily within Anthophoridae; elevated to family rank based on phylogenetic analyses of morphological and molecular data. The family's distinctive elongate galeae (components of the proboscis) represent a clear synapomorphy. Contrast with shorter-tongued bee families such as Andrenidae or Halictidae.