Munidopsis tanneri Faxon, 1893

Guzman, Guillermo L. & Sellanes, Javier, 2015, A review of the Munidopsidae Ortmann, 1898 (Decapoda, Galatheoidea) in Chilean waters, including new records for the Southeastern Pacific, Zootaxa 4021 (2), pp. 282-306 : 298

Munidopsis tanneri Faxon, 1893

( Fig. 10 )

Restricted synonymy:

Munidopsis tanneri Faxon, 1893: 187 ; 1895: 94, pl. 22 figs 1, 1a.— Wicksten, 1989: 316 (list).

Type locality. Gulf of Panama, 07°32.007’N, 078°36.30’W, “Albatross" expedition stn 3396, 474 m depth ( Faxon 1893).

Distributional range. Gulf of Panama and now from Chile..

Bathymetric range. 155– 474 m.

New records. MUAP (CD)-0175, 1 male cl 21.20 mm, off Arica, stn E-18 (18°25’S, 70°45’W, 390 m), “ PNUD ” survey; CZUCN, 1 male cl 21.44 mm, stn Z3 (33°15.48’S, 71°52.49’W, 323 m), FIP 2005-61 project (site is near a recently discovered methane seep site; J. Sellanes unpublished data).

Description. Rostrum straight, styliform with dorsal keel ( Fig. 10 a). Carapace subrectangular, covered by scale-like tubercles, ending in minute apical spine surrounded by row of setae; carapace surface flat, regions and grooves poorly developed ( Fig. 10 b). Eyes with spine overreaching cornea and tubercle on inner side. Abdominal somites unarmed, without keels or grooves ( Fig. 10 c). Cheliped longer than carapace, armed on dorsal and ventral margins, spines better developed on dorsal face; dactyl almost half length of palm ( Fig. 10 d). Walking legs longer than carapace, armed dorsally with row of spines ( Fig. 10 e); merus and carpus with mesial row of spines; ventral margin of dactyl unarmed. More robust cheliped observed in adult males ( Fig. 10 f, g).

Remarks. Munidopsis tanneri is closely related to M. scabra Faxon, 1893 . The two species are clearly differentiated by the flattened dorsal carapace and long antennal spine in M. tanneri . Munidopsis scabra has been recorded off Peru (11°50'S, 77°58'W) ( Garth & Haig 1971). This new record extends the range by more than 4000 km southward.

Figures

FIGURE 10. Munidopsis tanneri Faxon, 1893. Male cl 21.20 mm (a – e), MUAP (CD) - 0175, (f – g), male cl 21.44 mm. a, anterior region of carapace; b, lateral view of carapace; c, lateral view of first five abdominal somites; d, left cheliped; e, third pereiopod, with detail of dactyl; f, left cheliped, g carpus of left cheliped. Scale = 1 mm.