Macroregonia, SAKAI, 1978

Martin, Joel W. & Haney, Todd A., 2005, Decapod crustaceans from hydrothermal vents and cold seeps: a review through 2005, Zoological Journal of the Linnean Society 145 (4), pp. 445-522 : 496-497

publication ID	https://doi.org/ 10.1111/j.1096-3642.2005.00178.x
persistent identifier	https://treatment.plazi.org/id/03D96F29-FF96-FFB4-FC76-FB6EFE360CEC
treatment provided by	Diego
scientific name	Macroregonia
status

Treatment

GENUS MACROREGONIA SAKAI, 1978 View in CoL MACROREGONIA MACROCHIRA SAKAI, 1978

Type locality: North of and on Nintoku Seamount; 42°20′N− 41°11′N, 170°50′E− 170°36′E; 800–1100 m.

Known range: North Pacific, from the Emperor Seamount Chain off Japan ( Sakai 1978) eastward to British Columbia and south to California.

Occurrence at vents or seeps: restricted to the vicinity of the Juan de Fuca and Explorer vents off British Columbia (e.g. Tunnicliffe, Juniper & de Burgh, 1985; Tunnicliffe & Jensen, 1987; Van Dover, Grassle & Boudrias, 1990; Tunnicliffe, 1988) and the Patten- Murray Seamount (J. Voight, pers. comm.).

Material: North-eastern Pacific Ocean, Juan de Fuca Ridge ( Tunnicliffe et al., 1985: fig. 1; Tunnicliffe, 1988: 360).

– Juan de Fuca Ridge , Endeavour site; 47°56.9′N, 129°06.1′W; 2201 m; Alvin dive 2065, 16 July 1988; (from Martin & Pettit, 1998; mouthparts only). Specimens also exist at the FMNH, and video images exist from the High Rise Field of the Endeavour segment (J. Voight, pers. comm.) GoogleMaps .

Remarks: Tunnicliffe et al. (1985: 454; see also their fig. 11) noted that these large spider crabs, although not considered part of the vent fauna, were found in higher numbers in the vicinity of vents at Axial Seamount of the Juan de Fuca Ridge (off Washington and Oregon); Tunnicliffe (1988: 360) suggested that they occupy the same ecological niche at Juan de Fuca as crabs of the genus Bythograea do in the EPR sites. Tunnicliffe & Jensen (1987) commented further on the distribution and behaviour of the species at these same sites. Martin & Pettit (1998) described a new species of caprellid amphipod from the mouthparts of this species; specimens of these caprellids are housed at the LACM; the Field Museum (Chicago) additionally houses caprellids taken from the legs of these crabs (J. Voight, pers. comm.).