Propodeum

Homology Weekly: Propodeum

Monday, February 16th, 2009 | Ants, Comparative Anatomy, Homology Weekly, Morphology | 1 Comment
Abdomen of a <em>Manica rubida</em> worker. Roman numerals correspond to external abdominal segments. Propodeum shown in blue (Scanning Electron Micrograph, Roberto Keller/AMNH)

Abdomen of a Manica rubida worker. Roman numerals correspond to external abdominal segments. Propodeum shown in blue (Scanning Electron Micrograph, Roberto Keller/AMNH)

The propodeum is the subversive segment of the apocritan abdomen. As explained in a previous post, at some point during the evolution of Hymenoptera this first abdominal segment decided to part ways with its serial homologues and fuse with the thorax, forming a secondary tagma we call mesosoma. It is the Texas of the body’s segments so to speak.

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And as we discussed last semester, the Army Ants will leave nothing but your bones.
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