Damithrax tortugae ( Rathbun, 1920 )

Carmona-Suárez, Carlos & Poupin, Joseph, 2016, Majoidea crabs from Guadeloupe Island, with a documented list of species for the Lesser Antilles (Crustacea, Decapoda, Brachyura, Majoidea), Zoosystema 38 (3), pp. 353-387 : 368-370

Damithrax tortugae ( Rathbun, 1920)

( Fig. 5M )

Mithrax tortugae Rathbun, 1920: 23 (type locality: Tortugas). — Rodríguez 1980: 285 ( Curaçao). — Carré 2005: 23 ( Martinique).

Mithrax (Mithrax) tortugae – Rathbun 1924b: 20 ( Curaçao); 1925: 417 ( Curaçao).

MATERIAL EXAMINED. — Guadeloupe. KARUBENTHOS 2012, 1♂ juv. MNHN-IU-2013-5948 (lot JL1508), st. GB 36, 16 m ; 1♂ juv. MNHN-IU-2013-5925 (lot JL506), st. GR 14, 27 m; 1 ♂ MNHN-IU-2013-6753 (lot JL1098), st. GR 35, 15 m; 1♀ MNHN- IU-2013-6625 (lot JL1510), st. GR 55, 19 m.

DIAGNOSIS. — No spine or tubercle on postero-lateral margin, but a tubercle above the margin. Rostral sinus V-shaped, horns very wide.Two tubercles or blunt spines on anterior margin of arm. One high tubercle on anterior margin of arm, carpus almost smooth (see Windsor & Felder 2009, fig. 2c).

HABITAT. — Mainly on coral reefs. Collected 15-28 m, no deep range reported previously.

DISTRIBUTION ( Rathbun 1925; Melo 1996). — The distribution must be revised because the species was sometimes listed under D. hispidus . Western Atlantic. Bahamas, Florida Keys, Colombia, Brazil. Lesser Antilles ICA (?St Martin*, Guadeloupe, Martinique), IOV ( Curaçao). *St Martin, with hesitation, from unpublished inventory (UF32493, 25.IV.2015, coll. & photo A. Anker/G. Paulay).

REMARK

First report for Guadeloupe. This is a species of the Damithrax hispidus species complex (see under D. hispidus ).

Hemus cristulipes A. Milne-Edwards, 1875 ( Fig. 6C )

Hemus cristulipes A. Milne-Edwards, 1875: 88 (type locality: near Contoy , North of Yucatán). — Rathbun 1924b: 19 ( Curaçao); 1925: 345 ( Curaçao). — Hernández-Ávila et al. 2007: table 1 (Cubagua). — Lira et al. 2013: table 1 (Margarita, Cubagua).

MATERIAL EXAMINED. — Guadeloupe. KARUBENTHOS 2012, 1♀, 1 ♀ ov. MNHN-IU-2013-13085 (lot JL1258-2), st. GB 24, 25 m ; 1♀ MNHN-IU-2013-5668, st. GS 11, 17 m.

DIAGNOSIS. — Tips of rostrum separated by a sinus wider than either tip. Cardiac region prominent. Margin of merus joints of legs faintly crenulated.

HABITAT. — On hard substrate and rubble. Collected 17-25 m, reported 15- 69 m.

DISTRIBUTION. — Western Atlantic. North Carolina, Puerto Rico, Gulf of Mexico, Central America, Brazil. Lesser Antilles ICA (Guadeloupe), IOV (Margarita, Cubagua, Curaçao).

REMARK

First record for Guadeloupe. A key to the four species currently in the genus Hemus is in Windsor & Felder (2011).

Maguimithrax spinosissimus ( Lamarck, 1818) ( Fig. 6B )

Maia spinosissima Lamarck, 1818: 241 (type locality: “ Ile-de-France ” which is Mauritius; erroneous).

Mithrax spinosissimus – H. Milne Edwards 1832: 12 ( Martinique); 1834-1840: 321 (Antilles). — Desbonne in Desbonne & Schramm 1867: 4 ( Guadeloupe). — A. Milne-Edwards 1873-1880: 100 ( Guadeloupe). — Aurivillius 1889: 57 (St Barthélemy). — Wagner 1990: 14 ( St Thomas, St Martin, Guadeloupe, Barbados, Curaçao, Bonaire). — García et al. 1998: table 1 ( Isla de Aves ). — Lira et al. 2013: table 1 ( Isla de Aves, Los Roques ). — Questel 2014: 13 (St Barthélemy).

Mithrax (Mithrax) spinosissimus – Rathbun 1925: 383 ( St Thomas, St Martin, Guadeloupe, Martinique). — Marcano & Bolaños 2001: 77 (Los Roques). — Carré 2005: 23 ( Martinique).

Mithrax hispidus – Doflein 1899: 179 ( Martinique), not M. hispidus (Herbst) .

MATERIAL EXAMINED. — Guadeloupe. KARUBENTHOS 2012, 1♀ MNHN-IU-2013-6628 (lot JL308-1), 1♀ MNHN-IU-2013-6630 (lot JL308-2), st. GR08, 22 m ; 1 ♀ MNHN-IU-2013-6626 (lot JL742), st. GR 23, 20 m; 1♂ MNHN-IU-2013-6627 (lot JL1244), st. GR 41, 28 m.

DIAGNOSIS. — Large carapace without lateral angle. Three supraorbital spines between preorbital and postorbital spine. Fifth lateral spine in line with gastro-cardiac suture. No spine on basal antennal segment at articulation of next segment.

HABITAT. — Around rocks and rubble. Collected 20-28 m, reported 1- 179 m.

DISTRIBUTION. — Western Atlantic. North Carolina, South Florida. Bahamas, Cuba, Jamaica, Dominican Republic, Puerto Rico, Colombia, Venezuela. Lesser Antilles VI ( St Thomas), ICA (St Martin, St Barthélemy, Guadeloupe, Isla de Aves, Martinique, Barbados), IOV (Los Roques, Bonaire, Curaçao).

REMARK

This species is reported by Desbonne (1867) and A. Milne Edwards (1873 -80) as sometimes of very big size and common around Guadeloupe and Martinique where it is caught by traps in deep waters. This species has been recently transferred from Damithrax to Maguimithrax (see Klompmaker et al. 2015).

Mithraculus cinctimanus Stimpson, 1860 ( Fig. 6D )

Mithraculus cinctimanus Stimpson, 1860: 186 (type localities: Tortugas, St Thomas). — A. Milne-Edwards 1873-1880: 112 ( St Thomas, Guadeloupe). — Rathbun 1924b: 21 ( Curaçao). — Wagner 1990: 33 ( St Thomas, Barbuda, Guadeloupe, Dominica, Barbados, Tobago, Bonaire, Curaçao). — Marcano & Bolaños 2001: 76 (Los Roques). — Tagliafico et al. 2005: table 1 (Los Frailes). — Lira et al. 2013: table 1 (Los Frailes, near Margarita, Los Roques).

Mithrax affinis Desbonne , in Desbonne & Schramm, 1867: 10 ( Guadeloupe).

Mithrax (Mithraculus) cinctimanus – Rathbun 1925: 438 ( St Thomas, St Martin, Antigua, Curaçao).

MATERIAL EXAMINED. — Guadeloupe. KARUBENTHOS 2012, 1 ♂ MNHN-IU-2013-4226 (lot JL489-4), st. GM09, 1 m ; 1 ♀ MNHN-IU-2013-4955 (lot JL954), st. GM 21, 2 m; 1 ♂ MNHN-IU-2013-5944 (lot JL1014), st. GM 22, 1 m; 1 juv., MNHN-IU-2014-12830 (lot JL1419a), st. GM 34, 1 m; 1♂ MNHN-IU-2013-5945 (lot JL53), st. GR01, 3 m; 1 ♂ MNHN- IU-2013-4879 (lot JL1112-1), st. GR 37, 16 m.

DIAGNOSIS. — Carapace longer than broad. The property of the carapace being longer than broad, distinguishes this species from all other within the genus. On live specimens chelae are black on palm and fingers white with median black rings.

HABITAT. — On hard substrate and rubble, often associated with sponges, sea anemones and corals ( Porites sp.). Collected 1-16 m, reported previously 1- 4 m.

DISTRIBUTION. — Western Atlantic. South Florida , Bahamas, Jamaica, Puerto Rico, Gulf of Mexico , Colombia, Venezuela. Lesser Antilles VI (St Thomas), ICA ( St Martin *, Barbuda, Antigua, Guadeloupe , Dominica, Martinique **, Barbados, Tobago), IOV ( Los Frailes , Margarita , Los Roques, Bonaire, Curaçao). * St Martin from unpublished fieldwork ( UF32287 , 19.IV.2012, coll. & photo A. Anker / G. Paulay) ; **Martinique, from unpublished observation (in situ photo by Y. Buske in Legall & Poupin 2016).

REMARK

This species is common in Lesser Antilles albeit reported herein for the first time from St Martin and Martinique. It can be recognized in situ by black rings on chelae ( Fig. 6D ).

Figures

FIG. 5. — Pisinae Dana, 1851: A, Leptopisa setirostris (Stimpson, 1871), 1 ♂ MNHN-IU-2013-4901, st. GD68, 33 m; B, Macrocoeloma concavum Miers, 1886, 1 ♂ MNHN-IU-2013-4901, st. GM34, 1 m; C, D, Macrocoeloma diplacanthum (Stimpson, 1860), 1♀ MNHN-IU-2013-6755, st. GD49, 3 m (D, showing bifid postero-lateral spine); E, Macrocoeloma eutheca (Stimpson, 1871), 1 ov. ♀ MNHN-IU-2013-13091, st. GD69, 60 m; F, Macrocoeloma laevigatum (Stimpson, 1860), 1 ♂ MNHN-IU-2013-5134 (lot JL1410), st. GD63, 20 m; G, Macrocoeloma nodipes (Desbonne, in Desbonne & Schramm 1867), 1 ♂ MNHN-IU-2013-4312, st. GB01, 6 m; H, Macrocoeloma subparallelum (Stimpson, 1860), 1 ♂ MNHN-IU-2013-4961, st. GM08, 1 m; I, J, Macrocoeloma trispinosum (Latreille, 1825), 1♂ MNHN-IU-2013-5951, st. GR39, 5 m. Mithracidae (Windsor & Felder, 2014): K, Damithrax hispidus (Herbst, 1790), specimen not retrieved in MNHN collection, st. GR15 (lot JL497), 11 m; L, Damithrax pleuracanthus (Stimpson, 1871), 1 ♂ MNHN-IU-2013-5950, st. GR20, 8 m; M, Damithrax tortugae (Rathbun, 1920), 1♂ juv. MNHN-IU-2013-5925, st. GR41, 28 m.

FIG. 6. — Pisinae Dana, 1851: A, Stenocionops coelatus, 1 ♀ MNHN-IU-2013-6729, st. GN20, 258 m. Mithracidae (Windsor & Felder, 2014): B, Maguimithrax spinosissimus (Lamarck, 1818), 1♀ MNHN-IU-2013-6626, st. GR23, 20 m; C, Hemus cristulipes A. Milne-Edwards, 1875, 1 ♀ MNHN-IU-2013-5668, st. GS11, 17 m; D, Mithraculus cinctimanus Stimpson, 1860, 1 ♀ MNHN-IU-2013-4955, st. GM21, 2 m; E, Mithraculus coryphe (Herbst, 1801), 1 ♀ MNHN-IU-2013-4958, st. GB30, 16 m; F, Mithraculus forceps A. Milne-Edwards, 1875, 1 ♂ MNHN-IU-2013-4254, st. GB09, 6 m; G, Mithraculus sculptus (Lamarck, 1818), 1♂ MNHN- IU-2013-6619, st.GM11,1 m; H, Mithrax pilosus Rathbun,1892, 1♂ MNHN-IU-2013-5929 (as ‘Mithrax verrucosus’), st.GM02,1 m;I, Mithrax verrucosus H. Milne- Edwards, 1832, 1 ♂ MNHN-IU-2013-5934, st. GM02, 1 m; Mithrax sp. (aff. acuticornis), J, 1 ♀ ov. 26.4 × 24.2 mm MNHN-IU-2013-4437 (lot JL1046), st. GB33, 50 m; K, same with carapace cleaned to show lateral spines.