IUCN threat status:

Not evaluated

Comprehensive Description

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Characteristics

Cataulacus shares the following synapomorphies with the Cephalotini (Bolton 2003):
  • Abdominal segment III with tergosternal fusion
  • Tergite of abdominal segment IV hypertrophied, comprising entire dorsum of gaster in dorsal view
  • Ileum dilated and thickened to accommodate microorganisms
In addition, the genus has the following apomorphies:
  • Antennal sockets very widely separated
  • Antennal scrobe present that extends below the eye; scape, when laid back, passes below the eye
  • Slight sexual dimorphism
  • Male volsella without cuspis

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