Ethusa sp.

Italy, Nw, Pasini, Giovanni & Garassino, Alessandro, 2016, Short communications Ethusa sp. (Decapoda, Brachyura, Ethusidae) from the Pliocene of Valduggia (Vercelli, Piedmont, NW Italy), Natural History Sciences 3 (1), pp. 53-54 : 54

Ethusa sp. ( Fig. 2 )

Material and measurements: One complete carapace (MSNM i28302 – lcxp: 10 mm; wcxp: 10 mm).

Description: Carapace slightly convex transversely, longitudinally ovate, as long as wide, wider posteriorly; wide orbital frontal margin poorly preserved, with traces of strong triangular extraorbital teeth; anterolateral margins elongate and divergent; convex posterolateral margins converging posteriorly; posterior margin wide, concave laterally, nearly straight medially; dorsal regions distinct, well defined by grooves; suboval cardiac region; intestinal region depressed; hepatic regions separated from branchial regions by cervical groove; a suboval depression close to the depression of the cervical groove; branchial regions wide, crossed transversely by two parallel and curved branchial grooves forming two distinct ridges; dorsal regions uniformly covered by thin granulations or tubercles.

Figures

Fig. 2 - Ethusa sp., MSNM i28302, carapace in dorsal view (x 5).