Qu'est-ce (qui) est pygidium - définition
Pygidium
·noun The caudal plate of trilobites, crustacean, and certain insects. ·see ·Illust. of Limulus and Trilobite.
pygidium
[p??'d??d??m, -'g?d??m]
¦ noun (plural pygidia p??'d??d??, p??'g?d??) Zoology the terminal part or hind segment of the body in certain invertebrates.
Origin
C19: mod. L., from Gk puge 'rump'.
Pygidium
The pygidium (plural 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.
Wikipédia
Pygidium
The pygidium (plural 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.
