Decapoda - Brachyura - Macrophthalmidae - Chaenostoma

Chaenostoma crassimanus Stimpson, 1858


World Distribution
Teng et al. (2016, Crustacean Research) - C. crassimanus is the most widely distributed species, from East Africa to New Caledonia. Perhaps also Wallis & Futuna

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

Vertical range : Intertidal - Min-Max observed: 0-1 m

Mayotte data
Chaenostoma crassimanus Stimpson, 1858
Macrophthalmus (Chaenostoma) boscii - Poupin & Bouchard, 2010: 62, Mayotte KUW 2009, in part [1 M 3.6 x 4.6 mm, 1 juv. st. 31, Brandélé, MNHN B32074=MNHN-IU-2009-993] - Not C. boshii but C. crassimanus cf. Shih et al. (2015: 79).
Chaenostoma sinuspersici - Bouchard et al., 2013: 36, Mayotte KUW 2009 [same spp. Than Poupin & Bouchard, st. 31, Brandélé, MNHN B32074=MNHN-IU-2009-993] - Not C. sinuspersici but C. crassimanus cf. Shih et al. (2015: 79).
Chaenostoma crassimanus - Shih et al., 2015: 79, Mayotte. - Teng et al., 2016: 26, Mayotte - Same spp. Than Poupin & Bouchard, Bouchard et al., Brandélé, 2 MM 3.8, 4.9 mm, MNHN-IU-2009-993.— IWP (but not Red Sea), Probably East African coast, from Somalia to South Africa (as Macrophthalmus boscii), Mayotte (this work), Madagascar to Taiwan, Japan (Ryukyus), New Caledonia; intertidal.

Europa data
Chaenostoma lisae - Poupin et al., 2013: 13, Europa [Mission BIORECIE, st. 4, photo, 2 MM 3.1 x 3.8, 3.6 x 4.6 mm, MNHN-IU-2012-662]. - Naderloo, 2013: 2842, Europa [same specimens than Poupin et al. 2013] - Not C. lisae but probably juveniles of a species of the C. boscii complex, perhaps C. crassimanus following Teng et al. (2016: 26) that have attributed specimens from Madagascar (coll. A. Crosnier, 1962, MNHN-B10717=MNHN-IU-2009-2590), also listed in Naderloo (2013) as 'C. lisae', to C. crassimanus.

New Caledonia data
Macrophthalmus boscii - Junker & Poupin, 2009: 13, New Caledonia, in part [CRISP fieldwork 2009, st. 9, Pindai, 12 March 2009, 1 M 4.5 x 5.6 mm, 1 F ov 5.1 x 6.6 mm, MNHN B32603=MNHN-IU-2009-2591].
Chaenostoma lisae - Bouchard et al., 2013: 36, New Caledonia, in part, only sp. illustrated fig. 30D, det. R. Naderloo, CRISP fieldwork 2009, st. 9 Pindai, 1 M 4.5 x 5.6 mm (probably 1 M 6.1 mm, MNHN-IU-2009-2591]. - Naderloo, 2013: 2842, New Caledonia, [1 M 4.5 x 5.69, A F ov. 5.16 x 6.79 mm, Pindai] - Same spp. than Juncker & Poupin, not Chaenostoma lisae, C. crassimanus instead cf. Shih et al. (2015), Teng et al. (2016).
Chaenostoma crassimanus - Shih et al., 2015: 79, New Caledonia. - Teng et al., 2016: 26, New Caledonia - Same spp. than Juncker & Poupin [1 M4.9 mm, MNHN-IU-2013-9292, Noumea, coll. J. Poupin and M. Juncker, 5 Mar. 2009, St. 2 in Paris but doubtful because only 1 sp. collected at St. 2, attribued to C. orientale (with photo) ; 1 M 6.1 mm, 1 F 7.2 mm, MNHNIU-2009-2591 (?MNHN B32603, St. 9), coll. J. Poupin, 2009; same as in Juncker & Poupin, 2009].

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
WALLIS & FUTUNA - Macrophthamus boscii - Poupin & Juncker, 2008: 9, 35, Futuna [CRISP fieldwork, 2007, st. 2, M juv. 3.7x4.7 mm]. - Not C. boscii, probably C. crassimanus instead, the most widely distributed in the IWP (cf. Teng et al., 2016).

Comment(s) on data
C. boscii typical is in the Red Sea only. Macrophthalmus boscii (Audouin) from W&F, NC in Poupin (2010) INPN could be C. crassimanus widely distributed in the IWP or C. sinuspersici distributed in WIO.

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database