Decapoda - Brachyura - Mithracidae - Nemausa

Nemausa acuticornis (Stimpson, 1871)

World Distribution
Felder et al. (2009) - Western Atlantic. 1-103 m, E Fla–GMx, Antil, Brazil.

northern and northeastern Brazil: seamounts of north chain, Rocas Atoll, Paraíba, Seará, Amapá, Pará, Maranhão, Piauí, Ceará, Rio Grande do Norte, Pernambuco, Alagoas, Bahia

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

Vertical range : Shallow to deep-waters (e.g. 10-190 m) - Min-Max observed: 1-103 m

Lesser Antilles data
Distribution: VGI (St Croix, St John, Norman), ICA (Montserrat, Martinique, Barbados, St Vincent), IOV (Curaçao). 1-103 m. WA.
Mithrax acuticornis - A. Milne-Edwards & Bouvier, 1923: 390, St Croix, St John, Norman (Flanagan Passage), Montserrat, St Vincent (Grenadines) [R/V Blake, 27-163 brasses]. - Rathbun, 1921: 82, Barbados [Barbados-Antigua Expedition 1918]. - Rathbun, 1924: 20, Curaçao [coll. C.J. van der Horst, 1920].
Mithrax (Mithrax) acuticornis - Rathbun, 1925: 388, St Croix, St John/Norman-Flanagan Passage [probably only material examined, not the places for Nemausa rostrata A. Milne-Edwards, 1875, currently accepted as N. cornuta; see Comment].
Nemausa acuticornis – Carré, 2005: 23, Martinique.
Nemausa acuticornis - Martinique, groupe BIOSPHERES, November 2015, coll. R. Ferry & Y. Buske., det. J. Poupin.
Comment: This species is treated as a synonym of Nemausa cornuta (Saussure, 1857) by Wagner (1990) but this opinion is not accepted by Felder et al. (2009, note n°308): 'While we adopt many of the synonymies suggested by Wagner (1990), we defer on treatment of Nemausa acuticornis as a junior synonym of N. cornutus, pending more thorough comparative study'. Due to the similarity between N. acuticornis and N. cornuta, Nemausa rostrata A. Milne-Edwards, 1875 is synonymized with one or the other in literature.

Nemausa acuticornis — Parasram et al., 2023 (Zootaxa): 25, Barbados

French Guiana and surroundings areas: Guiana, Suriname, Brazil (Amapà)
Mithrax (Mithrax) acuticornis – Coelho, 1971, table 1: Brazil Amapá. — Coelho & Ramos, 1972: 214, Brazil Amapá.
Nemausa acuticornis – Barreto et al., 1993: tab. 1, Brazil Amapá. — Melo, 1996: 241, Brazil Amapá. — Melo, 1998: 465, Brazil Amapá. — Coelho et al., 2008: 23, Brazil Amapá. — Alves et al., 2012, tab. 1, Brazil Amapá. — Silva et al., 2002: 102, tab. 3, ?Brazil Amapá [Programa Revizee/Norte].
Distribution/Habitat – WA; Marine; 1–103 m.

Comment(s) on data
Erroneous records as Mithrax acuticornis from Guadeloupe, Karubenthos 2012, det. Carmona-Suarez, Besse 2013
MNHN-IU-2013-4433, GR33, JL1046-1, Photo Carmona
MNHN-IU-2013-4959, GB30, JL1402-3,
St. GR01, 3 m JL150-2, 1 male juv. MNHN-IU-2013-14667
4433, 4959 et 14667 = corrected into Nemausa cornuta in Carmona & Poupin (Zoosystema)
Det. D. Felder April 2014, based on photo - Majidae sp. - MNHN-IU-2013-6787, GD64, JL1453, Photo - Nemausa acuticornis (or juveniles of N. cornuta).

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database