episternum

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episternum

[¦ep·ə′stər·nəm]
(vertebrate zoology)
A dermal bone or pair of bones ventral to the sternum of certain fishes and reptiles.
References in periodicals archive ?
Prosternum and prothoracic episterna with fairly long yellowish-white hairs; sensory pit below prothoracic spiracle bare, not guarded by hairs.
Occiput and postocular portions of genae, pronotum (except lower portions of lateral lobes), tegmina and all other portions of body shiny and blackish-brown (except whitish markings on episterna described above).
6A); episterna and epimera well defined on thoracic segments (Figs 2A, 4A), hyperpleural lobes large and posteriorly rounded (Figs 4A, 6A); meso- and metasternal spines well defined, short and slender (Fig.