Eiconaxius caribbaeus ( Faxon, 1896 )

Poore, Gary C. B., 2018, Caribbean species of Eiconaxius (Decapoda: Axiidea: Axiidae), Zootaxa 4524 (1), pp. 139-146 : 142-145

publication ID

https://doi.org/ 10.11646/zootaxa.4524.1.11

publication LSID

lsid:zoobank.org:pub:83CB151C-66AA-4B92-9E44-5E3302FC7424

DOI

https://doi.org/10.5281/zenodo.5963729

persistent identifier

https://treatment.plazi.org/id/C72A87F5-FFFA-0B49-FF15-6904FDD9FDBC

treatment provided by

Plazi

scientific name

Eiconaxius caribbaeus ( Faxon, 1896 )
status

 

Eiconaxius caribbaeus ( Faxon, 1896) View in CoL

( Figs 3 View FIGURE 3 , 4 View FIGURE 4 )

Iconaxius caribbaeus Faxon, 1896: 155 View in CoL , pl. 1 figs 1–4.— Balss 1925: 209 (list).

Eiconaxius communis Bouvier, 1905: 803 View in CoL .

Axius (Eiconaxius) communis De Man, 1925: 4 View in CoL (list), 17 (key).

Eiconaxius rotundifrons Bouvier, 1905: 803 View in CoL . Syn. nov.

Axius (Eiconaxius) caribbaeus carinatus Bouvier, 1925: 465 , pl. 9 fig. 3.— Schmitt 1935: 191 –192, fig. 52. Syn. nov.

Axius (Eiconaxius) caribbaeus .— Bouvier 1925: 461 –463, pl. 7 fig. 6.— De Man 1925: 4 (list), 16 (key).

Axius (Eiconaxius) caribbaeus rotundifrons .— Bouvier 1925: 463 –464, figs 23–25, pl. 10 figs 3, 4.

Iconaxius communis .— Balss 1925: 210.

Axius (Eiconaxius) rotundifrons View in CoL .— De Man 1925: 4 (list), 17 (key).— Sakai 2011: 285

Iconaxius rotundifrons .— Balss 1925: 210.

Eiconaxius carribaeus .— Sakai & de Saint Laurent 1989: 19 (misspelling).

Eiconaxius carinatus View in CoL .— Sakai & de Saint Laurent 1989: 23.— Sakai 2011: 276.— Komai & Tsuchida 2012: 37 (list).

Eiconaxius rotundifrons View in CoL .— Sakai & de Saint Laurent 1989: 21 –22, fig. 6.— Felder et al. 2009: 1963 (records).— Sakai 2011: 276.— Komai & Tsuchida 2012: 37 (list).

Eiconaxius caribbaeus View in CoL .— Kensley,1996: 475 (list).— Felder et al. 2009: 1963 (records).— Sakai 2011: 275.— Komai & Tsuchida 2012: 37 (list).

Type material. Eiconaxius communis Bouvier, 1905 . Syntypes. Guadeloupe, 15.9°N, 61.6°W, 275 m (Blake stn 166), MCZ CRU-11954 (7), MNHN IU-2014-7157 (Th178) (1), MNHN IU-2014-7159 (Th180) (2) GoogleMaps . Grenada, Milligan Key , 12.1°N, 61.8°W, 227 m (Blake stn 259), MNHN IU-2014-7160 (Th181) (2) GoogleMaps . Grenada, St Vincent , off Milligan Key, 13.1°N, 61.1°W, 227 m (Blake stn 269), MCZ CRU-11955 (3 males, 1 female) GoogleMaps . Barbados, 13.0°N, 59.6°W, 225 m (Blake stn 297), MCZ CRU-11956 (1 male, 2 females), MNHN IU-2014-7158 (Th179) (ovigerous female) GoogleMaps . Barbados, 13.1°N, 59.6°W, 256 m (Blake stn 299), MCZ CRU-11957 (1), MNHN IU-2014-7156 (Th177) (1) GoogleMaps .

Eiconaxius rotundifrons Bouvier, 1905 View in CoL . Syntypes. Martinique, 14.4°N, 60.9°W, 346 m (Blake stn 209), MCZ CRU-11951 (ovigerous female). St Lucia, 13.8°N, 61.1°W, 300 m (Blake stn 218), MCZ CRU-11952 (male) GoogleMaps . Barbados, 12.9°N, 59.6°W, 527 m (Blake stn 281), MCZ CRU-11953 (female, male lost) GoogleMaps . Barbados, 13.1°N, 59.7°W, 432 m (Blake stn 283), MCZ CRU-11967 (2 ovigerous females) GoogleMaps . Saint Lucia, 281 m (Blake stn 216), MNHN IU-2014-5069 (4 males, 4 ovigerous females)

Axius (Eiconaxius) caribbaeus carinatus Bouvier, 1925 . Syntypes. St Croix, off Mount Eagle, 17.8°N, 64.8°W, 399 m (Blake stn 139), MCZ CRU-11968 (1). Montana, Montserrat, 16.7°N, 62.2°W, 545 m (Blake stn 154), MNHN IU-2014-7161 (Th182) (female). Grenada, Milligan Key, 12.1°N, 61.8°W, 291 m (Blake stn 259), MCZ CRU-11958 (female).

Non-type material. From Blake stations. Eiconaxius caribbaeus ( Faxon, 1896) . Guadeloupe, 15.9°N, 61.6°W, 275 m (Blake stn 166), MCZ CRU-74395 (1), MCZ CRU-19408 (male) . St. Lucia, 13.8°N, 61.1°W, 300 m (Blake stn 218), MCZ CRU-126745 (1) GoogleMaps . Barbados, 13.2°N, 51.9°W, 384 m (Blake stn 291), MCZ CRU-19409 GoogleMaps (1).

Other material. Cuba, off Matanzas, 420 m (Harvard-Havana Expedition 1938 stn 2999) (MNHN IU-2017- 1738, MCZ donation (female non-type).

Guadeloupe. KARUBENTHOS 2015 stations. N of Grande-Terre , 16°34'N, 61°37'W, 426–441 m (stn DW4518 ), IU-2013-18871 (male, 5.6 mm) GoogleMaps . 16°38'N, 61°31'W, 320–338 m (stn DW4538 ), IU- 2016-2319 (ovigerous female, 5.6 mm) GoogleMaps . 16°37'N, 61°31'W, 432–482 m (stn DW4550 ), IU- 2016-2411 (3 males, 3.6–3.8 mm; 7 females, 4.5–4.8 mm; ovigerous female, 5.8 mm), ( NMV J71645 View Materials ) (male, 5.1 mm; female, 5.7 mm; 2 ovigerous females, 5.7–6.0 mm). W of Marie-Galante GoogleMaps , 15°48'N, 61°28'W, 378–432 m (stn DW4633 ), IU- 2016-2642 (female, 5.4 mm). S of Marie-Galante GoogleMaps , 15°48'N, 61°20'W, 485–496 m (stn DW4639 ), IU- 2016-2903 (2 males, 4.2, 6.5 mm). E of La Désirade GoogleMaps , 16°20'N, 60°55'W, 389–413 m (stn DW4573 ), IU-2016-8309 (male, 3.6 mm; female, 4.5 mm; 4 ovigerous females, 4.3–6.3 mm) GoogleMaps . 16°22'N, 60°54'W, 140–340 m (stn DW4574 ), IU-2016-8353 (female, 4.0 mm) GoogleMaps . 16°21'N, 60°56'W, 370 m (stn DW4554 ), IU-2016-8361 (4 males, 4.5–6.4 mm; female, 5.7 mm; 5 ovigerous females, 4.4–6.1 mm) GoogleMaps .

Diagnosis. Rostrum tapering more over distal third than proximal, with rounded apex in adult (acute in juvenile), 1.5–2.0 times as long as wide; lateral margins smooth or denticulate. Major cheliped fingers about half as long as upper margin of palm; fixed finger cutting edge with broad blade over proximal half, irregular beyond; dactylus cutting edge with basal molar, notch and straight beyond. Minor cheliped palm upper margin as long as greatest width; distolateral margin with prominent triangular toothed lobe at base of dactylus; fingers almost as long to longer than upper margin of palm. Uropod endopod anterolateral apex acute, with 1 or few small teeth.

Distribution. USA, Cuba, Mexico, Virgin Islands, Monserrat, Martinique, Dominica, Grenada, Guadeloupe, Saint Lucia, Barbados; Caribbean Sea; Straits of Florida; Gulf of Mexico; 140–545 m depth.

Remarks. Faxon (1896) designated the specimen from Blake stn 283 as the “type” (holotype) of Iconaxius caribbaeus but this is lost. He also listed one each from Blake stns 166 and 232 plus three from Blake stn 241. One specimen from Blake stn 166 remains in the MCZ (CRU-74395), possibly the “femelle qui a servi de type pour la description précédente” by Bouvier (1925). Bouvier listed other material from Blake stn 166 (3 males, 5 females, plus several), stn 218 (2), stn 259 (1 male, 2 females), stn 269 (1 ovigerous female, 3 males), stn 291 (1), stn 290 (2 males, 1 female), stn 297 (2 ovigerous females) and stn 299 (2 males, 1 female) but only two of these remain in the MCZ. Bouvier (1925) treated Eiconaxius communis Bouvier, 1905 as a junior synonym of Axius (Eiconaxius) caribbaeus without specifying its types or type localities. Five lots bearing this name, presumably in Bouvier’s hand, from some of the stations listed under A. (E.) caribbaeus by Bouvier (1925) remain in the MNHN and are treated as syntypes of E. communis . The male of Eiconaxius rotundifrons from Blake stn 241 listed by Bouvier (1925) is lost. Bouvier (1925) listed syntypes of Axius (Eiconaxius) caribbaeus carinatus from four Blake stations: stn 139 (1 female) and stn 259 (1 female), now at MCZ, stn 154 (1 female), now at MNHN, and stn 232 (1 male) now lost.

Bouvier (1905, 1925) distinguished his species and varieties relying on the prominence of the denticulation of the rostral margin and the cheliped merus margin, and the degree of carination of the major cheliped. These are subtle differences and in this large sample intermediate states were common. None of Bouvier’s species or varieties are recognised here. The fixed finger of the major cheliped of Eiconaxius caribbaeus consistently has a broad concave blade, slightly more elevated distally, over its proximal half. A blunt proximal tooth opposes it on the dactylus. These can be seen in Faxon’s (1896) figure 3 and in Bouvier’s (1925) figure 3 of E. caribbaeus rotundifrons . The median carina bifurcates and disappears quickly on the gastric region.

The species is the mostly commonly occurring species of the genus in the Caribbean and that with the shallowest depth range. There is a single record from the Gulf of Mexico as E. rotundifrons (see Felder et al. 2009).

MCZ

Museum of Comparative Zoology

MNHN

Museum National d'Histoire Naturelle

NMV

Museum Victoria

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Axiidae

Genus

Eiconaxius

Loc

Eiconaxius caribbaeus ( Faxon, 1896 )

Poore, Gary C. B. 2018
2018
Loc

Eiconaxius caribbaeus

Komai, T. & Tsuchida, S. 2012: 37
Sakai, K. 2011: 275
Felder, D. L. & Alvarez, F. & Goy, J. W. & Lemaitre, R. 2009: 1963
Kensley, B. 1996: 475
1996
Loc

Eiconaxius carribaeus

Sakai, K. & de Saint Laurent, M. 1989: 19
1989
Loc

Eiconaxius carinatus

Komai, T. & Tsuchida, S. 2012: 37
Sakai, K. 2011: 276
Sakai, K. & de Saint Laurent, M. 1989: 23
1989
Loc

Eiconaxius rotundifrons

Komai, T. & Tsuchida, S. 2012: 37
Sakai, K. 2011: 276
Felder, D. L. & Alvarez, F. & Goy, J. W. & Lemaitre, R. 2009: 1963
Sakai, K. & de Saint Laurent, M. 1989: 21
1989
Loc

Axius (Eiconaxius) communis

De Man, J. G. 1925: 4
1925
Loc

Axius (Eiconaxius) caribbaeus carinatus

Schmitt, W. L. 1935: 191
Bouvier, E. L. 1925: 465
1925
Loc

Axius (Eiconaxius) caribbaeus

Bouvier, E. L. 1925: 461
De Man, J. G. 1925: 4
1925
Loc

Axius (Eiconaxius) caribbaeus rotundifrons

Bouvier, E. L. 1925: 463
1925
Loc

Iconaxius communis

Balss, H. 1925: 210
1925
Loc

Axius (Eiconaxius) rotundifrons

Sakai, K. 2011: 285
De Man, J. G. 1925: 4
1925
Loc

Iconaxius rotundifrons

Balss, H. 1925: 210
1925
Loc

Eiconaxius communis

Bouvier, E. L. 1905: 803
1905
Loc

Eiconaxius rotundifrons

Bouvier, E. L. 1905: 803
1905
Loc

Iconaxius caribbaeus

Balss, H. 1925: 209
Faxon, W. 1896: 155
1896
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