Argentinian snakes

Pseudotomodon Koslowsky 1896
Pseudotomodon Koslowsky, 1896. Rev. Mus. La Plata VII: 454.
Pseudotomodon Peracca, 1897. Bol. Mus. Zool. Anat. Comp. Univ. Torino 12 (278): 1.
Type species: Pseudotomodon mendozinus (= Pelias trigonatus Leybold, 1873) by monotypy.
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Pseudotomodon trigonatus (Leybold, 1873)
Pelias trigonatus Leybold, 1873. Excursión a las Pampas Arjentinas, Hojas de mi diario: 82.
Tomodon ocellatus Boulenger, 1896 (partim). Cat. Snakes Brit. Mus. Nat Hist. 3:121.
Pseudotomodon mendozinus Koslowsky, 1896. Rev. Mus. La Plata 7: 455.
Pseudotomodon Crivellii Peracca, 1897. Bol. Mus. Zool. Anat. Comp. R. Univ. Torino 12 (278):1.
Pseudotomodon trigonatus Serié, 1936. Inst. Mus. Univ. La Plata, Obra Cincuentenario: 49.
Tomodon ocellatus trigonatus Abalos, Baez & Nader, 1964. Acta Zool. Lilloana 20: 253.
Pseudotomodon trigonatus Bailey, 1970. In Peters & Orejas-Miranda, Bull. U. S. Nat. Mus.
297 (1): 256.
Type locality: Estancia Los Aguirre, Departamento San Carlos, Mendoza, Argentina.
Distribution: Córdoba, Chubut, La Pampa, La Rioja, Mendoza, Neuquén,
Rio Negro, San Juan, San Luis and Santiago del Estero (Orrego Aravena, 1971; Avila, 1997; Tiranti & Avila,
1997). According to Williams & Francini (1991), the species´ presence in Catamarca needs to be confirmed.
Mainly in Monte province, but also in Chaqueña province (Serrano district), in “Sierras” of Córdoba, and in
southern Buenos Aires in border areas of Espinal province.
Psomophis Myers & Cadle, 1994
Psomophis Myers & Cadle, 1994. Am. Mus. Nov. 3102: 6
Type species: Rhadinaea obtusa Cope, 1863. By original designation.
Psomophis genimaculatus (Boettger, 1885)
Dromicus lineatus Duméril, Bibron & Duméril 1854. Erp. Gen. 7 (1):
Liophis (Lygophis) genimaculata Boettger, 1885. Z. Naturwiss. 58: 213-248.
Rhadinaea genimaculata Boulenger, 1894. Cat. Sn. Brit. Mus. (Nat. Hist.) 2: 170-171.
Liophis joberti Hoge, 1958 (partim). Pap. Avulsos, Dept. Zool. Sec. Agr. S. Paulo 13 (17): 222-223.
Psomophis genimaculatus Myers & Cadle, 1994. Am. Mus. Nov. 3102: 16.
Type locality: Paraguay
Distribution: Salta, Formosa and Corrientes (Scrocchi & Giraudo 1997; Lions & Alvarez, 1997). Also in
Bolivia, Paraguay and Mato Grosso do Sul, Brazil (Myers & Cadle, 1994). Chaqueña province.
Comments: Distributions of both Argentinian species overlap in the vicinity of Resistencia city (Chaco) and
Corrientes city (Corrientes) (Scrocchi & Giraudo, 1997). Earlier studies mentioned Chaco, Misiones and
Santa Fe (Koslowsky, 1898; Serié, 1921, 1936), but there are no voucher specimens from these locations.
Psomophis obtusus (Cope, 1863)
Rhadinaea obtusa Cope, 1863. Proc. Acad. Nat. Sci. Philad. 15: 101.
Enicognathus sp. Müller, 1882 [1880]. Verh. Naturf. Ges. Basel 7 (1):144.
Coronella obtusa Boulenger, 1885. Ann. Mag. Nat. Hist., ser. 5, 15 (87):194.
Liophis obtusus Amaral, 1929. Mem. Inst. Butantan 4: 89.
Psomophis obtusus Myers & Cadle, 1994. Am. Mus. Nov. 3102: 23.
Type locality: Paysandú, Uruguay
Distribution: In the provinces of the Paraná River basin: Corrientes, Chaco, Santa Fe, Entre Ríos, reaching
Buenos Aires (Scrocchi & Giraudo, 1997; Giraudo & Quaini, 1997). Also in southern Paraguay, southern
Brazil (Rio Grande do Sul) and Uruguay (Myers & Cadle, 1994; Achával & Olmos, 1997). Chaqueña,
Espinal and Pampeana provinces.
Rhachidelus Boulenger 1908
Rhachidelus Boulenger, 1908. Ann. Mag. Nat. Hist. (8) 2: 31.
Type species: Rhachidelus brazili Boulenger 1908, by monotypy.