Decapoda - Axiidea - Axiidae - Bouvieraxius

Bouvieraxius rudis (Rathbun, 1906)

World Distribution
ABRS (Internet). Indo-ouest Pacifique. Madagascar, Australie orientale (73-436 m), Nouvelle-Calédonie, Hawaii.

Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)

Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 0-420 m

Mayotte data
Bouvieraxius rudis - Mission KUW novembre 2009, st. 20b, 1 mâle Lc =7,8 mm, Lt = 21 mm (31,0 mm avec les chélipèdes), 1 femelle ovigère Lc = 7,5 mm, Lt = 19,0 mm, photographie, dét. Ngoc-Ho, MNHN Th1561.

New Caledonia data
Bouvieraxius rudis - Sakai & de Saint Laurent, 1986: 46, New Caledonia [MUSORSTOM 5, st. 0255, 7 Octobre 1986; annotaded in copy with 'different species']
Nouvelle Caledonie, STATION — Dworschak P, Compendium of marine species from New Caledonia, Vol II7: 305-307

Comment(s) on data
Color of this species as illustrated herein is very similar to that of B. keiensis Sakai, 1992 as illustrated in Komai (2020, Zootaxa: 370, fig. 1, Japan). The later distributed from "Kai Islands, Banda Sea, Indonesia (type locality); Papua New Guinea; North-western Australia; Timor Sea; Vanuatu; Mauritius; Mozambique Channel; 73–750 m (Poore 2020). Newly recorded from Ogasawara Islands, Japan".
Komai (2020) remarks that "The relation between Bouvieraxius rudis (Rathbun, 1906) and B. keiensis is not clear. Sakai & de Saint Laurent (1989), who reexamined the female holotype from Molocai Island, Hawaii, identified specimens from Madagascar and New Caledonia as B. rudis. Sakai’s (1992; 2011) discrimination between B. keiensis and B. rudis relied chiefly on the number of spines on the submedian gastric carina, but Poore & Collins (2009) and Poore (2020) demonstrated that the number of spines ranges from three to five, even within a single individual, in specimens they referred to B. keiensis. Poore & Collins (2009) referred an ovigerous specimen from Western Australia that was identified with B. rudis by Sakai (1994) to B. keiensis. In the original description of B. rudis (as Axius), Rathbun (1906) specifically mentioned that “The carapace granulate but nearly naked.” Presence of such granules on the carapace has not been mentioned in previous accounts of B. keiensis, as well as the present specimen. For the time being, I regard the two taxa are specifically distinct, although future revisionary study is strongly recommended. The present specimen is provisionally identified as B. keiensis because of its similarity to the holotype and the consistency in the living coloration with that of specimens from Papua New Guinea illustrated by Poore (2020), geographically close to the type locality in the Banda Sea, Indonesia."

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database