Decapoda - Brachyura - Oziidae - Eupilumnus

Eupilumnus calmani (Balss, 1933)

World Distribution
Guinot (1959), WoRMS - Mer Rouge, Golfe Persique, Océan Indien, Afrique orientale (Tanzanie), Seychelles (Aldabra), Mer de Chine. Intertidal à 174 m (in Crosnier, 1984, coll. Bruce Tanzanie, 174 m). Also French Polynesia, det. J. Poupin 2014, from Moorea CRIOBE collection (sp. from Mataiva, Tuamotu).

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

Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 1-174 m

Mayotte data
Eupilumnus calmani (Balss, 1933)
Material examined — Mayotte KUW 2009, st. 17, 1 M 6.2 x 8.9 mm, northern reef, 22 m, photo only, sp. not located; st. 23, Choizil pass "Patate à Teddy", 15-30 m, 1 M 9.7 x 12 mm (photo with 9.5 x 12.9 mm), 3 MM 5.7 x 6.9 to 7.5 x 8.5 mm, 1 F 10.9 x 13.5 mm (the same as 'Glabropilumnus? st 23-M, 9.5 x 12.9 mm in Bouchard et al., 2009, photo p. 69), MNHN-IU-2013-7223; st. 35, Surprise reef, Longoni pass, 4-25 m, 1 F 6.4 x 7.7 mm, det. September 2011, MNHN-IU-2013-7224 - All these specimen in Ecole Navale/IRENav collection, September 2017.
Other records — Poupin et al., 2013c: 11, Glorieuses, Expedition Glorieuses December 2012 (new record), st. Dive 3, st. BIO 39, 1 F 15.9x17.4 mm.
Remarks — Mayotte KUW specimens erroneously determined in the field as ‘Pilodius cf. flavus’. Re-examination in July/September 2011 have shown that they are in fact Eupilumnus calmani, based on description and drawings in Guinot (1960), including aspect of male G1/G2. Eupilumnus calmani is very similar to Eupilumnus actumnoides (A. Milne-Edwards, 1873) in western Pacific (Japan, Papua New Guinea, New Caledonia, Samoa, Kiribati, Australia) but it is different by the anterolateral spines on the carapace, sharp and long, instead of reduced in E. actumnoides, and by the presence of a stridulating apparatus on P2 merus and cheliped (illustrated in Guinot, 1960: 113, fig. 11) and presence of a row of granules on pterygostomian area.
Distribution — IWP, Red Sea, Tanzania to China Sea, French Polynesia; intertidal to 174 m. Distribution extended herein to French Polynesia from specimen collected in the Tuamotu (Mataiva) determined in Moorea CRIOBE collection in 2014 by J. Poupin.

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
Eupilumnus calmani - French Polynesia - Mission CRIOBE 2014 (collection, Mataiva, 1 sp. as Glabropilumnus sp., re-det. J. Poupin as Eupilumnus calmani).

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database