Xantho, Leach, 1804

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 : 127

Xantho cf. X. incisus (Leach, 1814)

Fig. 3E

Material and measurements: One left cheliped (MSNM i27908 – hpa: 5 mm; ld: 5 mm; li: 4 mm; lpa: 8 mm) and two right chelipeds (MSNM i27909 – hpa: 4 mm; ld: 3 mm; li: 2 mm; lpa: 6 mm; MSNM i27911 – hpa: 6 mm; ld: 4 mm; li: 3 mm; lpa: 8 mm).

Discussion. The studied chelipeds show general morphological characters similar to Xanthidae MacLeay, 1839 . Moreover, the dorsal palm and merus ornamentation with coarse rugae and deep pits, closely resembles chelipeds of Xantho incisus (Leach, 1814) . Beside the small sized and short dactylus are also typical characters of the female individuals. Based upon these observations, we ascribe tentatively both the specimens to female individuals of Xantho cf. X. incisus . This is the first report for the species from the Mediterranean fossil record.

The extant species lives in Mediterranean Sea on rocky environments, ranging from the subtidal level down to depths of about 100 meters ( Zariquiey Álvarez, 1968).

Figures

Fig. 3 - A) Pisa armata (Latreille, 1803), MSNM i27880, right chela, outer and inner views (x 3.2). B) Atelecyclus undecimdentatus (Herbst, 1783), MSNM i27879, right chela, outer view (x 3.7). C) Pilumnus hirtellus (Linnaeus, 1761), MSNM i27904, carapace in dorsal view (x 8.5). D) Pilumnus hirtellus (Linnaeus, 1761), MSNM i27912, right chela, outer and inner views (x 7.5). E) Xantho cf. X. incisus (Leach, 1814), MSNM i27908, left chela, outer and inner views (x 4.6).