Pygidium

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Notion

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Science and technology

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What Wikipedia says

The pygidium (pl.: pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor.

Excerpt from the Wikipedia article “Pygidium”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ch1902 vector, Sam Gon III raster, Public domain, via Wikimedia Commons.