Carcinoplax dentatus Rathbun, 1893: 243
Trizocarcinus dentatus Rathbun 1914a: 118
Garth 1948: 52
Guinot 1969b: 518
Solar et al . 1970: 27
Hendrickx 1990: 49
Lemaitre & Álvarez-León 1992: 56
Ng et al . 2008: 78
Revision of the family Euryplacidae Stimpson, 1871 (Crustacea: Decapoda: Brachyura: Goneplacoidea)
CASTRO, PETER
NG, PETER K. L.
Zootaxa
2010
2010-02-26
2375
1
1
130
7CVVD
(Rathbun, 1893)
Rathbun
1893
[151,637,151,177]
Malacostraca
Euryplacidae
Trizocarcinus
Animalia
Decapoda
109
110
Arthropoda
species
dentatus
( 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); 1 male paratype( USNM 123310). Typelocality. 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); stn. 3035, 1 pre-adult female, 7.3 mm× 8.7 mm( USNM 17464). – Roca Consag, Gulf of California, 31°7’N, 114°29’W 09.05.1982: 1 male, 15.3 mm× 20.3 mm( MNHN-B20987).
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.
[340,796,490,516]
USNM
Male
109
110
USNM 17462
1
1
Maale
holotype
[804,1115,490,516]
USNM
109
110
USNM 123310
1
Male
paratype
[198,1122,527,554]
Mexico
96
Cabo Lobos
Gulf of California
109
110
1
Sonora
holotype
1980-03-30
Mexico
Bahia de San Ignacio
Gulf of California
109
110
MNHN-B20990
1
1
USNM
Mexico
104
29.908333
Gulf of California
122
-113.01667
Albatross
109
110
USNM 17463
1
USNM
Mexico
109
110
USNM 17464
1
1982-09-05
Mexico
31.116667
Roca Consag
1218
-114.48333
Gulf of California
109
110
MNHN-B20987
1
1