Propodeum

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.

In molluscs[edit]

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

References[edit]

^ "propodeum". Merriam-Webster Dictionary.
^ Maggenti, Mary Ann (2010). Dictionary of Invertebrate Zoology. Lulu.com. p. 291. ISBN 9781609620011.
^ 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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[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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