acrotergite
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acrotergite — n. [Gr. akros, tip; L. tergum, back] (ARTHROPODA: Insecta) The anterior precostal part of the tergal plate of a secondary segment usually in the form of a narrow flange, varying in size or sometimes obliterated … Dictionary of invertebrate zoology
acrotergite — ac·ro·ter·gite … English syllables
postnotum — n.; pl. ta [L. post, after; Gr. notum, back] (ARTHROPODA: Insecta) The phragma bearing plate in the dorsum of a pterothoracic segment, originating from the acrotergite of the following notum; see mesopostnotum, metapostnotum … Dictionary of invertebrate zoology