Anat. Pl. epimera. [f. Gr. ἐπί upon + μηρός thigh.] That part of the lateral wall of a somite of a crustacean which is situated between the articulation of the appendage and the pleuron.
1872. H. A. Nicholson, Palæont., 146. The superior arc is completed by two lateral pieces which are termed the epimera.
1880. Huxley, Crayfish (ed. 6), iv. 143.