- mesanepisternum
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n. [Gr. mesos, middle; ana, up; epi, on; sternon, chest](ARTHROPODA: Insecta)1. In Diptera, the upper area of the mesepisternum separated from the meskatepisternum by the mesanapleural suture; sometimes divided into anterior and posterior by anepisternal cleft; the anepisternum.2. In Odonata, the anepisternum.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.