Decapoda - Brachyura - Acidopsidae - Parapilumnus

Parapilumnus cristimanus (A. Milne-Edwards, 1873)



World Distribution
Ng (2002 : 217), Guinot (1959) - Nouvelle-Calédonie, Samoa, Palau. Plus Mayotte premier signalement.

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

Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 1-30 m

Mayotte data
Parapilumnus cristimanus (A. Milne-Edwards, 1873)
Material examined — Mayotte KUW 2009, st. 23, Choizil pass "Patate à Teddy", 15-30 m, 1 F 12.18 x 14.91 mm, MNHN-B32380, MNHN-IU-2009-1153.
Remarks — A very similar species, Parapilumnus oryctos, has been described by Ng (2002) from a single male 10.5 × 12.3 mm collected in Guam. The most distinct character to separate both species is the ratio width/length of the carapace, being of 1.25-1.33 in P. cristimanus versus only 1.17 in P. oryctos. In Mayotte specimen examined herein this ratio is 1.22, almost in the range of P. cristimanus. Other characters indicated by Ng (2002) are possibly sex and/or size variable and can be appreciated only with larger series of specimens. Live coloration of P. cristimanus from Mayotte and P. oryctos from Guam (photo transmitted by G. Paulay, posted on Legall & Poupin, 2018) are very similar suggesting that the latter is perhaps a junior synonym of P. cristimanus.
Geographic and depth ranges — IWP, Mayotte (this work) to Samoa, Palau; shallow subtital to 15/30 m.

Réunion data
?Parapilumnus cristimanus- Réunion - Program BIOLAVE, ARVAM, J.-P. Quod, photo, plate A. Barrère. (pl. Q5, bottom right, to be confirmed by examination of specimen).

New Caledonia data
Nouvelle Caledonie, STATION — Ng P.K.L & Richer de Forges B., Compendium of marine species from New Caledonia, Vol II7: 315-332

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
Parapilumnus cf. cristimanus. - Salvat & Bacchet, 2011: 245, photo, field guide 'Au Vent des Iles Ed. Tahiti - French Polynesia, most often Society (Moorea, Tahiti).

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database