- plegmatium
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n.; pl. -tia [Gr. plegma, plaited](ARTHROPODA: Insecta)In scarabaeoid larvae, a lateral paired area with a plicate, sclerotized surface, bordered by marginal plegmated spines with acanthoparia.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.