Antliophora

Definition

A clade of holometabolous insects united by the presence of a spermathecal pump (antlia) in the male reproductive system, comprising the orders Diptera (true flies), Mecoptera (scorpionflies), and Siphonaptera (fleas), with Strepsiptera (twisted-wing parasites) sometimes included. Historically treated as part of the superorder Panorpida (or Mecopterida), the group is supported by both morphological and molecular evidence.

Etymology

From Latin antlia (pump, suction device) + -phora (bearing), referring to the sperm pump characteristic of males in this clade.

Example

The Antliophora include the Diptera and Mecoptera, which share derived features of the male reproductive tract including the sperm pump, as well as reduced or lost ovipositors in females and specific wing-venation patterns.

Synonyms

• Panorpida (in part)

Related Terms

• Panorpida
• Mecopterida
• Holometabola
• Endopterygota
• Diptera
• Mecoptera
• Siphonaptera
• Strepsiptera
• spermathecal pump
• ovipositor

Usage Notes

The composition and rank of Antliophora have varied historically. Some treatments treat it as a subclade within the superorder Panorpida (or Mecopterida), while others use the names interchangeably or restrict Panorpida to exclude Strepsiptera. The inclusion of Strepsiptera remains debated; molecular analyses sometimes place them elsewhere, though morphological evidence traditionally grouped them here. The name Antliophora emphasizes the sperm-pump synapomorphy, whereas Panorpida emphasizes broader morphological and molecular affinities.