STENORHYNCHINAE Dana, 1851

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 : 366

Subfamily STENORHYNCHINAE Dana, 1851

Stenorhynchus seticornis (Herbst, 1788) ( Figs 3F , 4A )

Cancer seticornis Herbst, 1788 (1782-1804): 229; 27 ( Guadeloupe).

Cancer sagittarius Fabricius, 1793: 442 ( Guadeloupe) .

Leptopodia sagittaria – H. Milne Edwards 1834 -1840: 321 (Antilles). — Desbonne in Desbonne & Schramm 1867: 1 ( Guadeloupe). — A. Milne-Edwards 1880: 6 (St Croix, St John/ Norman-Flanagan Passage, Barbados). — A. Milne-Edwards & Bouvier 1923: 361 (St Croix, St John/Norman-Flanagan Passage, Barbados).

Leptopodia sagittaria var. modesta – A. Milne-Edwards 1873-1880: 172 ( Martinique).

Stenorhynchus seticornis – Rathbun 1924b ( Curaçao); 1925: 18 ( St Thomas, St Martin, Dominica, Curaçao); 1933: 6 ( St Thomas, St Croix). — Monod 1939: 561 (Guadeloupe). — Chace 1956: 159, Los Roques. — Rodríguez 1980: 270 (Cubagua, Tortuga). — Scelzo & Varela 1988: 37 (Blanquilla). — Goeke 1989: 626 ( St Thomas, Barbados, Grenada, Trinidad, Curaçao). — Hernández et al 1999: table 2 (Magarita). — Marcano & Bolaños 2001: 72 (Cubagua). — Lira 2004: table 1 ( Tortuga). — Carré 2005: 23 (Martinique). — Tagliafico et al. 2005: table 1 (Los Frailes near Margarita). — Hernández-Ávila et al. 2007: table 1 (Cubagua). — Questel 2014: 13 (St Barthélemy).

MATERIAL EXAMINED.— Guadeloupe. KARUBENTHOS 2012, 1♀ MNHN-IU-2013-6636 st. GB 17, 13 m ; 1 ♀ MNHN-IU-2013-6637 (lot JL1480), st. GB 33, 50 m; 2 ♀ MNHN-IU-2013-4059, st. GD 21, 40 m; 1 ♀ MNHN-IU-2013-4434 (lot JL753), st. GD 26, 60 m; 1♂ MNHN-IU-2013-6682 (lot JL929), st. GD 31, 85 m; 1 ♀ MNHN-IU-2013-6679 (lot JL979), st. GD 35, 66 m; 2 ♀ MNHN- IU-2013-4182 (lot JL1377), st. GD 59, 88 m ; 1 ♂ (with Sacculina ) MNHN-IU-2013-5956, st. GD 69, 60 m; 1♂ MNHN-IU-2013-4174 (lot JL1386), st. GM 33, 6 m; 2 juv. no MNHN (lot JL492), st. GM09, 1 m ; 1♀ MNHN-IU-2013-6686 (lot JL1029), st. GN 26, 130 m; 1 ♂ MNHN-IU-2013-5930 (lot JL104), st. GR02, 20 m; 1 ♀ MNHN-IU-2013-6635 (lot JL1138), st. GR 37, 16 m; 1 ♂ MNHN-IU-2013-4547 (lot JL526), st. GS 10, 23 m; 1♀ MNHN- IU-2013-5919, st. GS 20, 19 m.

ADDITIONAL SPECIMENS (identified as S. debilis based on the presence of a small spine at tip of basal antennal article; see Remarks). — Guadeloupe. KARUBENTHOS 2012, 2 ♂, 2 ♀ MNHN-IU-2013-6634 (lot JL626), st. GD 17, 30 m ; 2 ♀ MNHN- IU-2014-12827, st. GD 21, 40 m ; 1 ♀ MNHN-IU-2013-4063 (lot JL970-1), st. GD 35, 66 m; 1 ♀ MNHN-IU-2013-6633 (lot JL650), st. GN 16, 75 m; 1♀ MNHN-IU-2013-4060 (lot JL817), st. GN 21, 150 m; 1 ♀ MNHN-IU-2013-4062 (lot JL12), st. GR01, 3 m; 2 ♂, 1 ♀ MNHN-IU-2013-6632 (lot JL370-1), st. GR 11, 13 m; 2♂ MNHN-IU-2013-4061 (lot JL731), st. GR 23, 20 m; 2♂, 1 ♀ MNHN-IU-2013-6631 (lot JL466), st. GS09, 11 m; 3 sp. MNHN-IU-2013-4154 ( JL891-4 ), st. GS 20, 19 m.

DIAGNOSIS. — Carapace naked, rostrum covered with short dense felt and setae, becoming longer and thicker distally ( Fig. 4A ). No spines at distal end of basal antennal article, single inter-antennular spine directed posteriorly. Chelipeds hairy, palms from three to four times length of fingers in mature males, not as stout in females. Merus of third maxiliped normally with small spine on anterodistal angle. Pereopods, abdomen, and sternum bearing short pubescence.

HABITAT. — On Thalassia , Syringodium and Halophila stipulacea seagrass beds. Among and on the roots of Rhizophora mangle . On rocky, coral, sandy, rubble, pebble bottoms. Collected 1-150 m, reported to 336 m but specimens collected deeper than 100 m usually belong to S. yangi (see Goeke 1989).

DISTRIBUTION. — Western Atlantic. Bermuda, North Carolina, Florida, Jamaica, Bahamas, Puerto Rico, Mexico, Belize, Colombia, Venezuela, Brazil, Argentina. Lesser Antilles VI ( St Thomas, St Croix, St John, Norman), ICA (St Martin*, St Barthélemy, Guadeloupe, Dominica, Martinique, Barbados), IOV (Los Frailes, Margarita, Cubagua, Blanquilla, Tortuga, Los Roques, Curaçao). *St Martin, from unpublished fieldwork (12.IV.2012, UF31984, coll. A. Anker/G. Paulay).

REMARKS

Species very common in Lesser Antilles.Type-locality uncertain, perhaps Guadeloupe (cf. Rathbun 1925: footnote 12; Goeke 1989). A neotype is designated from Curaçao by Goeke (1989: 622, UNSM 42956). During the workshop in Besse-et-Saint-Anastaise (2013) several specimens were preidentified as Stenorhynchus debilis (Smith, 1871) , a geminate species of S. seticornis in the eastern Pacific. All of them have a small spine at end of basal article of antenna, as illustrated in Rathbun (1925: fig. 4), and therefore should be attributed to S. debilis for which Rathbun (1925: 19) has indicated “this species has at times been united with seticornis but the anterior spine of the basal antennal article separates it specifically”. We are reluctant to report in this work a species from the eastern Pacific until more observation is made to more clearly separate it from the Atlantic S. seticornis , including molecular biology. However, there is the possibility that Stenorhynchus debilis is currently invasive in the Lesser Antilles as observed for other Decapoda such as Charybdis hellerii (A. Milne-Edwards, 1867) (cf. Lemaitre 1995; Tavares & Braga de Mendonça 1996).

Figures

FIG. 3. — Inachidae MacLeay, 1838: A, Ericerodes gracilipes (Stimpson, 1871), 1 ov. ♀ 8.3 × 4.8 mm MNHN-IU-2013-4199, st. GD35, 66 m; B, Eucinetops blakianus Rathbun, 1896, 1 ov. ♀ MNHN-IU-2013-4191, st. GB01, 6 m; C, Podochela curvirostris (A. Milne-Edwards, 1879), 1 sp. MNHN-IU-2013-19105? KARUB- ENTHOS 2015, st. CP4623, 26/06/2015, 15°55.72’N, 61°31.02’W, 182-217 m; D, Podochela grossipes Stimpson, 1860, 1 ♂ MNHN-IU-2013-4135, st. GD50, 22 m; E, Podochela macrodera Stimpson, 1860, 1♂ MNHN-IU-2013-6613, st. GM11, 1 m. Stenorhynchinae Dana, 1851; F, Stenorhynchus seticornis (Herbst, 1788),1 ♀ MNHN-IU-2013-4062, st. GR01, 3 m; G, Stenorhynchus yangi Goeke, 1989, 1 sp. no MNHN (lot JL314), st. GN11, 140 m. Inachoididae (Guinot, 2012): H, I, Aepinus septemspinosus (A. Milne-Edwards, 1878),1 ♀ ov. 5.8 × 4.1 mm MNHN-IU-2013-11301, st. GD02,80 m; J, Collodes trispinosus Stimpson 1891, 1♀ MNHN-IU-2013-4197 (lot JL973-1), st. GD35, 66 m; K, Euprognatha gracilipes A. Milne-Edwards,1878, 1 sp. MNHN-IU-2013-19060? KARUBENTHOS 2015, st. DW4613, 25/06/2015, 16°24.16’N, 60°50.1’W, 210-240 m; L, Euprognatha rastellifera Stimpson, 1871, 1♂ 8.4 × 6.2 mm MNHN-IU-2013-4120, st. GD17, 30 m; M, Pyromaia acanthina Lemaitre, N. H. Campos & Bermúdez, 2001, 1 ♀ ov. 12.9 (without rostrum) × 8.8 mm, MNHN-IU-2013-5931, st. GN04, 150 m.

FIG. 4. — Comparison of rostrum in Stenorhynchus Lamarck, 1818 species: A, Stenorhynchus seticornis (Herbst, 1788), rostrum with setae, specimen from Martinique,coll. R. Ferry XI.2015,10-20 m (University of Fort de France); B, Stenorhynchus yangi Goeke, 1989, rostrum without setae, 1 specimen from Guadeloupe KARUBENTHOS 2012, lot JL314 (no MNHN, photo only), st. GN11, 140 m.