Calappa granulata (Linnaeus, 1758)

Garassino, Alessandro, Pasini, Giovanni, Angeli, Antonio De & Hyžný, MatÚš, 2014, The decapod fauna (Axiidea, Anomura, Brachyura) from the Late Pleistocene of Trumbacà, Reggio Calabria (Calabria, southern Italy), Natural History Sciences 1 (2), pp. 119-130 : 125-126

Calappa granulata (Linnaeus, 1758)

Fig. 2D, E

Material and measurements: Two carapaces (MSNM i27906 – lcxp: 11 mm; wcxp: 15 mm; i27907 – incomplete); two right and one left complete propodus (MSNM

i27893 – hpa: 22 mm; ld: 13 mm; li: 8 mm; lpa: 16 mm; MSNM i27894 – hpa: 18 mm; ld: 12 mm; li: 5 mm; lpa: 14 mm; MSNM i27895 – hpa: 16 mm; ld: 10 mm; li: 5 mm; lpa: 12 mm); four right dactyli (MSNM i27896 – ld: 23 mm; MSNM i27897 – ld: 21 mm; MSNM i27898 – ld: 10 mm; MSNM i27899 – ld: 8 mm).

Description: Postero-lateral margins of the granulate carapace strongly convergent with triangular teeth; regions well marked by two longitudinal grooves dividing the dorsal surface of carapace in three parts bearing blunt lined tubercles; subtriangular propodus, higher anteriorly; upper margin with a rim of pointed triangular spines; lower margin with a longitudinal row of small granulations; outer margin of propodus with some granulations; short triangular index curved downward distally; robust long pointed dactylus strongly curved, directed-downward distally with granulations along the upper margin and a typical strong prominence on the basis of the outer margin.

Discussion. The studied specimens have the typical morphological characters of the representatives of Calappidae and they have been assigned to the fossil Calappa granulata . This species was previously reported from the Pliocene of Tuscany, Piedmont, Emilia Romagna and Sicily; from the Pleistocene of Monte Pellegrino (Sicily); from the Early Pleistocene of Poggio i Sodi (Siena, Tuscany), and Fabro Scalo (Terni, Umbria) ( Ristori, 1891a; Gemmellaro, 1914; Garassino & De Angeli, 2004a; Garassino et al., 2004; De Angeli et al., 2009; Pasini & Garassino, 2012; Baldanza et al., 2013; 2014; Garassino & Pasini, 2013; Pasini & Garassino, 2013). Extant C. granulata is widespread in the Mediterranean Sea, living usually in sandy, muddy and detrital bottoms from 30 to 150 meters deep.

Figures

Fig. 2 - A) Ebalia cf. E. deshayesi Lucas, 1846, MSNM i27902, carapace in dorsal view (x 12). B) Ilia nucleus (Linnaeus, 1758), MSNM i27903, carapace in dorsal view (x 6). C) Medorippe lanata (Linnaeus, 1767), MSNM i27884, carapace in dorsal and ventral views (x 2). D) Calappa granulata (Linnaeus, 1758), MSNM i27906, incomplete carapace in dorsal view (x 4.6). E) Calappa granulata (Linnaeus, 1758), MSNM i27893, right chela, outer view (x 2.5).