Propodium

Propodeum

Propodeum

Body part of certain invertebrates


The propodeum, propodeon[1][2] or propodium[attribution needed] is the first abdominal segment in Apocrita Hymenoptera (wasps, bees and ants). It is fused with the thorax to form the mesosoma. It is a single large sclerite, not subdivided, and bears a pair of spiracles. It is strongly constricted posteriorly to form the articulation of the petiole, and gives apocritans their distinctive shape. There may be a suture between the propodeum and the thorax, like in Symphyta[3] or not, and the presence or absence of such suture can aid in identifying specimens.

Propodium in orange (as alitrunk)

In molluscs

Propodium is the anterior (frontal) part of the foot of a mollusk.


References

  1. "propodeum". Merriam-Webster Dictionary.
  2. Maggenti, Mary Ann (2010). Dictionary of Invertebrate Zoology. Lulu.com. p. 291. ISBN 9781609620011.
  3. Saini, Malkiat; Dhillion, Surjit (September 1980). "Metapleural Transformations with Respect to Propodeum and Metapostnotum in Hymenoptera". The Florida Entomologist. 63 (3): 286–292. doi:10.2307/3494624. JSTOR 3494624. Retrieved 16 November 2020.



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