Trizocarcinus dentatus ( Rathbun, 1893 )

CASTRO, PETER & NG, PETER K. L., 2010, Revision of the family Euryplacidae Stimpson, 1871 (Crustacea: Decapoda: Brachyura: Goneplacoidea), Zootaxa 2375 (1), pp. 1-130: 110

publication ID

http://doi.org/ 10.11646/zootaxa.2375.1.1

persistent identifier

http://treatment.plazi.org/id/03F487A8-3931-4249-7D8C-FA99F5BBFBE9

treatment provided by

Felipe

scientific name

Trizocarcinus dentatus ( Rathbun, 1893 )
status

 

Trizocarcinus dentatus ( Rathbun, 1893)  

( Figs. 44A–G; 46A–F)

Carcinoplax dentatus Rathbun, 1893: 243   [Gulf of California].

Trizocarcinus dentatus Rathbun 1914a: 118   , fig. 1, pl. 1; 1918: 18, fig. 3, pl. 1 [Gulf of California]. — Garth 1948: 52 [ Ecuador]; 1960: 113. — Guinot 1969b: 518 [discussion], figs. 37, 44, 46, 48, 49 [holotype]; 1971: 1081 [in list]. — Chirichigno 1970: 61, fig. 151. — del Solar 1970: 44 [ Perú]. — del Solar et al. 1970: 27 [ Perú]. — Hendrickx 1990: 49 [Gulf of California]; 1992: 9 [in list]; 1993a: 314 [in list]; 1995: 139 [in list] [Pacific coast of Mexico]. — Lemaitre & Álvarez-León 1992: 56 [in list]. — Ng et al. 2008: 78 [in list].

Type material. Male holotype ( USNM 17462 View Materials ); 1 male   paratype ( USNM 123310 View Materials )   .

Type locality. Mexico, Gulf of California, Sonora, off Cabo Lobos , 54–137 m.  

Material examined. Mexico. Bahía de San Ignacio , Gulf of California, 30.03.1980: 1 male, 14.7 mm × 20.2 mm ( MNHN-B20990)   . – Gulf of California , Albatross, stn. 3017, 29°54.5’N, 113°01.0’W, 104 m, 24.03, 1889: 1 pre-adult female, 10.0 mm × 12.4 mm ( USNM 17463 View Materials ) GoogleMaps   ; stn. 3035, 1 pre-adult female, 7.3 mm × 8.7 mm ( USNM 17464 View Materials )   . – Roca Consag , Gulf of California, 31°7’N, 114°29’W 09.05.1982: 1 male, 15.3 mm × 20.3 mm ( MNHN-B20987) GoogleMaps   .

Diagnosis. Dorsal, ventral surface of carapace granular ( Fig. 44B, C, F, G). Granular stridulating ridge on pterygostomian region ( Rathbun 1918: fig. 3). G1 apex exceptionally long ( Fig. 46E).

Remarks. Trizocarcinus dentatus   , which is restricted to the Tropical Eastern Pacific region, shares with the Western Atlantic T. tacitus Chace, 1940   , a carapace with curved anterolateral borders each armed with two teeth ( Figs. 44A; 45A) as well as the other characters that define the genus Trizocarcinus   . Its carapace, however, is granular in contrast to the smooth carapace of T. tacitus   . The conspicuous, granular stridulating ridge along the pterygostomian region of T. dentatus   ( Rathbun 1918: fig. 3) is absent in T. tacitus   , and the cheliped tomentum ( Fig. 44D) is generally more conspicuous than that of T. tacitus   .

Distribution. Tropical Eastern Pacific region from the Gulf of California to northern Perú. Depth: 36– 126 m.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Euryplacidae

Genus

Trizocarcinus

Loc

Trizocarcinus dentatus ( Rathbun, 1893 )

CASTRO, PETER & NG, PETER K. L. 2010
2010
Loc

Trizocarcinus dentatus

Ng, P. K. L. & Guinot, D. & Davie, P. 2008: 78
Lemaitre, R. & Alvarez-Leon, R. 1992: 56
Hendrickx, M. E. 1990: 49
Solar C. & Blancas S. & Mayta L. 1970: 27
Guinot, D. 1969: 518
Garth, J. S. 1948: 52
Rathbun, M. J. 1914: 118
1914
Loc

Carcinoplax dentatus

Rathbun, M. J. 1893: 243
1893