Tehuana complanata (Rathbun, 1905)

Moreno-Juarez, Eric G., Villalobos, Jose Luis & Alvarez, Fernando, 2022, Revision of the freshwater crabs of the genus Tehuana Rodriguez & Smalley in Smalley 1970 (Decapoda, Pseudothelphusidae), with the descriptions of two new species, ZooKeys 1117, pp. 1-35 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.1117.85362

publication LSID

lsid:zoobank.org:pub:CF280A34-D24A-4B8F-8BF5-5FB43D9B5C29

persistent identifier

https://treatment.plazi.org/id/27C50A5D-F13E-5283-A541-2709123F12BE

treatment provided by

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scientific name

Tehuana complanata (Rathbun, 1905)
status

 

Tehuana complanata (Rathbun, 1905) View in CoL

Figs 8D View Figure 8 , 9D View Figure 9

? Pseudothelphusa bocourti .-Rathbun, 1898: 512 (in key), 513, 533 (list) [not Boscia bocourti A. Milne-Edwards, 1866].

Pseudothelphusa complanata Rathbun, 1905: 303, fig. 3.- Coifmann 1939: 107 (list).

"Pseudothelphusa" complanata .-Pretzmann, 1965: 10 (list).

Pseudothelphusa Pseudothelphusa ( Pseudothelphusa ) Pseudothelphusa lamellifrons gruneri .-Pretzmann, 1968: 7.- Pretzmann 1971: 22 (list).

Pseudothelphusa (Pseudothelphusa) americana lamellifrons .-Bott, 1970: 334, pl. 2, figs 11-13.

Potamocarcinus (Raddaus) bocourti complanata .-Pretzmann, 1971: 20.(list).

Potamocarcinus (Raddaus) bocourti complanatus .-Pretzmann, 1972: 78, text fig. 18, fig. 542.

Pseudothelphusa Pseudothelphusa (Tehuana) lamellifrons gruneri .-Pretzmann, 1972: 108, figs 621-623, 674-677.

Pseudothelphusa (Tehuana) cordobensis Rodríguez & Smalley, 1972: 77, fig. 8, pl. 5.

Pseudothelphusa (Tehuana) complanata Türkay, 1978: 145, figs 2a, b, 3.

Tehuana complanata Rodriguez, 1982: 131, fig. 85.- Villalobos 1982: 221 (list).- Villalobos-Hiriart et al. 1993: 284 (list).- Alvarez and Villalobos 1994: 730.- Álvarez et al. 1999: 20, fig. 3 (map), 23, box 3 (list).-Villalobos and Alvarez 2003: 2003 (in key).- Villalobos Hiriart and Álvarez 2008: 280, 298 (list).- Ng et al. 2008: 177 (list).-Villalobos and Alvarez 2010: 474, 477, fig. 11 (map).- Álvarez et al. 2011a: appx. VIII.20, p. 13 (list).- Mejía-Ortíz et al. 2011: 97, 136 (map 2).- Álvarez et al. 2012: 1078, box 1 (list).- Cumberlidge et al. 2014: 144, tab. 3 (list).- Alvarez and Villalobos 2016: 254, tab.8.1 (list).- Villalobos-Hiriart et al. 2019: 156, tab.1 (list).

Material examined.

Mexico - Veracruz • 1 ♂, holotype of Pseudothelphusa (Tehuana) cordobensis Rodríguez and Smalley (1972); LC 38.2 mm, AC 59.0 mm; Municipality of Córdoba Ojo de Agua, Paraje Nuevo , 18°52'35"N, 96°51'49"W; alt. 661 m; 2 May 1953; A. Villalobos leg.; CNCR 311 GoogleMaps . 1 ♂; LC 30.0 mm, AC 45.4 mm; Municipality of Amatlán de Los Reyes, Lourdes River Cave ; 18°47'00"N, 96°54'00"W; alt. 439 m; 13 Jun. 1996; J. Herrera, E. Ramírez leg.; CNCR 11958 GoogleMaps . 3 ♂, 3 ♀; LC 15.4-27.9 mm, AC 22.9-42.7 mm; Municipality of Amatlán de Los Reyes, Amatlán II Power Station ; 18°51'23"N, 96°54'19"W; alt. 730 m; 6 Jun. 1992; J. Herrera, E. Ramírez leg.; CNCR 11957 GoogleMaps . 1 ♀, LC 26.2 mm, AC 18.9 mm; Motzorongo, Municipality of Tezonapa, Motzorongo River ; 18°38'30"N, 96°43'53"W; alt. 271 m; C. Pedraza, L. García leg.; CNCR 34618 GoogleMaps .

Diagnosis.

G1, in cephalic view, with three protuberances on lateral surface, proximal one being the most developed. In mesial view, meso-distal lobe conical, with round and slender apex. In caudal view, median constriction forming a large lobe oriented proximally. Caudo-marginal projection with distal lobes separated by linear notch without leaving space in between. Distal lobe with rounded cephalic edge, shorter than proximal lobe. Proximal lobe ax-shaped, higher than distal (1.5 ×); cephalic border circular, caudal border straight; distal crest slightly laterally oriented, lobe with sloping appearance. Internal carina well marked, circular, its length covering at least ⅓ of internal surface. Mesial process reduced, in transversal position, without lateral spine; distal edge oriented cephalad. Internal angle developed in form of lobe, two-thirds as high as mesial process, wide, touching the internal surface of distal lobe (DL) of CMP. In distal view, mesial process concave, internal angle hidden below the proximal lobe (PL) of caudo-marginal projection.

Distribution.

Tehuana complanata is distributed around the city of Cordoba, Veracruz, Mexico (Fig. 1 View Figure 1 ).

Remarks.

The recognition of the type locality of Tehuana complanata has been problematic since Rathbun (1905) cited "Coban, Alta Vera Paz, Guatemala" as the type locality of Pseudothelphusa complanata. Later, Rodríguez and Smalley (1972) described Pseudothelphusa (Tehuana) cordobensis from "Paraje Nuevo, Córdoba, Veracruz" which fits the description of T. complanata . Türkay (1978) discussed this situation concluding that it was a labelling error by Bocourt who placed crabs from Veracruz, Mexico in a jar with specimens from Coban, Guatemala. Rodriguez (1982) synonymized P. (T.) cordobensis under T. complanata and designated the male from "Paraje Nuevo, Córdoba, Veracruz" (CNCR 311) as the holotype.

Morphologically, the G1 of T. complanata is similar to that of T. jacatepecensis ; both species have a broadly rounded to semicircular proximal lobe of the CMP, although in the former the distal and proximal lobes are subequal in length, whereas in the latter the proximal lobe is clearly shorter (Fig. 8D View Figure 8 ). Tehuana complanata is also similar to T. lamellifrons even when they are geographically distant within the genus range (Fig. 1 View Figure 1 ); however, in the obtained phylogeny they appear as sister species (Fig. 3 View Figure 3 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Pseudothelphusidae

Genus

Tehuana

Loc

Tehuana complanata (Rathbun, 1905)

Moreno-Juarez, Eric G., Villalobos, Jose Luis & Alvarez, Fernando 2022
2022
Loc

Pseudothelphusa (Tehuana) cordobensis

Rodriguez & Smalley 1972
1972
Loc

Pseudothelphusa lamellifrons gruneri

Pretzmann 1968
1968
Loc

Pseudothelphusa (Tehuana) lamellifrons gruneri

Pretzmann 1968
1968
Loc

Pseudothelphusa complanata

Rathbun 1905
1905
Loc

Pseudothelphusa (Tehuana) complanata

Rathbun 1905
1905
Loc

Boscia bocourti

A. Milne-Edwards 1866
1866
Loc

Pseudothelphusa

de Saussure 1857
1857
Loc

Pseudothelphusa

de Saussure 1857
1857
Loc

Pseudothelphusa

de Saussure 1857
1857
Loc

Pseudothelphusa

de Saussure 1857
1857