Propodeum

The propodeum or propodium 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.

In molluscs

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

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gollark: Hmm, I think we *did* hire someone like that.

gollark: Oh, wait, THAT photographer?

gollark: This is clearly fake, our server rooms are just solid cubes of computronium nowadays, none of that "discrete servers" or "wiring" nonsense.

gollark: That was my initial idea, yes.

References

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