Decapoda - Brachyura - Calappidae - Cyclozodion

Cyclozodion angustum (A. Milne-Edwards, 1880)



World Distribution
Felder et al. (2009) - Western Atlantic - 94-421 m. E Fla–E GMx, Bah, Carib, nS Am.
Melo (1996: 123) - Also Brazil.

Environnement : Marine - Substrat/Association : Soft bottom (mud or sand)

Vertical range : Shallow to deep-waters (e.g. 10-190 m) - Min-Max observed: 94-421 m

Lesser Antilles data
Distribution: WA, eastern Florida to eastern Gulf of Mexico, Bahamas, Caribbean Sea, northern South America. Lesser Antilles, VGI (St Thomas, St Croix, Virgin Gorda), Lesser Antilles, ICA (Anguilla, Guadeloupe, Barbados, Grenada), IOV (Margarita). 94-421 m.
Calappa angusta A. Milne Edwards 1880:18a, St Croix, Anguilla (Sombréro) Barbados, Grenada [R/V Blake, R/V Hassler, R/V Bache, 54-115 brasses; part, see Williams & Child, 1989]. - A. Milne-Edwards & Bouvier, 1902: 123, pl. 24, fig. 5-8, pl. 25, fig. 1-3, St Croix, Anguilla (Sombréro), Barbados, Grenada [R/V Hassler, 100 brasses, 183 m, Barbados; R/V Bibb, 54 brasses, 99 m, Sombrero = Anguilla; R/V Blake, 115 brasses, 210 m, Santa Cruz, 92 brasses, 168 m, Grenada, 103 brasses, 188 m, Barbados]. - Rathbun, 1921: 66, Barbados [Barbados-Antigua Expedition 1918]. - Rathbun, 1933: 103, Barbados, Grenada. - Rathbun, 1937: 210, St Thomas, St Croix, Barbados, Grenada. - Türkay, 1968: 251, Margarita [coll. Dr. Vogelsang, 1968].
Cyclozodion angustum - Williams & Child, 1989: 110, Virgin Gorda, Anguilla, Barbados, [type locality, Barbados, R/V Hassler, 27-30 Dec. 1871, 183 m; Virgin Gorda, Anguilla, Barbados, R/V Oregon 1959-1967, 91-336 m].
Cyclozodion ?angustum (or juveniles of C. tuberatum) - Guadeloupe, Karubenthos 2012, re-det Poupin April 2014 (corrected from C. sulcata in MNHN collections), with hesitation, these specimens (smooth carapace) are rather small and can be juveniles of Cyclozodion tuberatum with tuberculate carapace (e.g. for larger sp., n° 4456, tubercles are visible on photo); st. GS21, 16 May 2012, 16°23.26'N, 61°31.79'W, 14 m, MNHN-IU-2013-4524 (JL921-photo field, labo, 1 juv. 4.3x4.5 mm); st. GD25, 14 May 2012, 16°25'N, 61°33'W, 160 m, MNHN-IU-2013-4456 (JL751, 1 F 10.2x10.8 mm, carapace broken), MNHN-IU-2013-4516; st. GD31, 16 May 2012, 16°24.97'N, 61°32.8'W, 85 m, MNHN-IU-2013-4509, MNHN-IU-2013-4511 (JL919); st. GD33, 16 May 2012, 16°24'N, 61°33'W, 130 m, MNHN-IU-2013-4518 (JL933); st. GD37, 18 May 2012, 16°22.8'N, 61°33.44'W, 60 m, MNHN-IU-2013-4515; st. GD59, 25 May 2012, 16°22.55'N, 61°35.38'W, 88 m, MNHN-IU-2013-4510 (JL1377).+
Cyclozodion angustum - Guadeloupe (first record), Karubenthos II 2015, field det. J. Poupin, st. DW4586, 21 June 2015, 15°59.62'N, 61°22.51'W, 251-204 m, MNHN-IU-2013-19003; st. DW4597, 22 June 2015, 15°55.47'N, 61°23.48'W, 210-208 m, MNHN-IU-2013-19033.
Comment: the shape of the carapace of the specimens examined is similar to that of C. angustum as illustrated in Williams (1984, fig. 203). This species can be confused with Cyclozodion tuberatum Williams & Child, 1989, a species also collected during Karubenthos 2015. During Karubenthos 2012 a few specimens have been attributed with hesitation to C. ?angustum because they are very small and/or broken and could be perhaps juveniles of C. tuberatum with tubercles not fully developped on carapace.

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database