Argentinian snakes

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Lystrophis pulcher (Jan, 1863)
Heterodon pulcher Jan 1863. Arch. Zool. Anat. Fisiol. 2:222.
Lystrophis semicinctus Boulenger 1894. Cat. Snakes Brit. Mus. 2:153 (partim).
Lystrophis pulcher Scrocchi & Cruz, 1993. Papéis Avulsos Zool. 38 (10): 178.
Type locality: Bolivia.
Distribution: Catamarca, Chaco, Córdoba, Corrientes, Entre Ríos, Formosa, Jujuy, Salta, San Luis, Santiago
del Estero, Santa Fe and Tucumán. Also in eastern Bolivia and southern Paraguay (Scrocchi & Cruz, 1993;
Tiranti & Avila, 1997). Mainly in Chaqueña province, with records in Espinal.
Comments: Recently revalidated (Scrocchi & Cruz, 1993), formerly confused with Lystrophis semicinctus.
Lystrophis semicinctus (Duméril, Bibron & Duméril, 1854)
Heterodon semi-cinctus Duméril, Bibron & Duméril 1854 Erp. Gén. 7:774.
Heterodon pulcher Jan, 1863 (partim). Arch. Zool. Anat. Phys. II: 224.
Lystrophis semicinctus Boulenger, Cat. Snakes Brit. Mus. Nat. Hist. 2:153.
Lystrophis semicinctus weiseri Müller, 1928. Zool. Anz. 77: 72.
Type locality: Buenos-Ayres et à Santa-Cruz.
Distribution: Buenos Aires, Catamarca, Córdoba, Chubut, Entre Ríos, La Pampa, La Rioja, Mendoza,
Neuquén, Río Negro, San Luis and Tucumán. Also in western Bolivia (Scrocchi & Cruz, 1993). Monte,
Espinal, Pampeana and Patagónica provinces.
Comments: Formerly, authors considered a greater distribution because of the confusion with L. pulcher.
Mastigodryas Amaral 1934
Eudryas Fitzinger, 1843. Syst. Rept.: 26. Preoccupied by Eudryas Boisduval 1836.
Mastigodryas Amaral, 1934. Mem. Inst. Butantan 8 (1933-34): 157.
Dryadophis Stuart, 1939 (substitutive name to Eudryas Fitzinger), Copeia 1939: 55.
Type species: Mastigodryas danieli Amaral.
Mastigodryas bifossatus bifossatus (Raddi, 1820)
Coluber bifossatus Raddi, 1820. Mem. Soc. Italiana Sci. Modena 18: 333.
Coluber capistratus Lichtenstein, 1823. Verzeichniss der Doubletten des Zoologischen Museums
der Königl. Universität zu Berlin: 104.
Coluber Lichtensteinii Wied, 1825. Nova Acta Acad. Leop. Carol., 12 (2): 493.
Coluber pantherinus (no Daudin) Schlegel, 1837. Essai Physion. Serpens, 2: 143, pl. 5, figs. 13-14.
Dryadophis bifossatus bifossatus Stuart, 1941 Misc. Publ. Mus. Zool. Univ. Mich., 49: 39, pl. 2, fig. 5.
Mastigodryas bifossatus bifossatus Peters & Orejas Miranda, 1970. Bull. U. S. Nat. Mus. 297 I: 192.
Type locality: Rio de Janeiro, Brazil.
Distribution: Eastern Chaco, Corrientes and Misiones (Giraudo, 1997). Also in Brazil from Rio Grande do
Sul to Rio de Janeiro (Stuart, 1941). Associated to Paranaense province.
Comments: Mentioned in Uruguay by Stuart (1941), Achával & Olmos (1997) do not include the species in
their list.
Mastigodryas bifossatus triseriatus (Amaral, 1931)
Dzymobius bifossatus triseriatus Amaral, 1931. Bull. Antiven. Amer. 4: 86.
Dryadophis bifossatus triseriatus Stuart, 1941. Misc.Publ. Mus. Zool. Univ. Michigan 49: 43.
Mastigodryas bifossatus triseriatus Peters & Orejas Miranda, 1970. Bull. U. S. Nat. Mus. 297 I: 192.
Type locality: Taunay, Mato Grosso (now Mato Grosso do Sul), Brazil.
Distribution: Corrientes, Chaco, Entre Ríos, Jujuy, Formosa, Salta and Santa Fe (Giraudo, 1997). Center,
northeastern and south of Brazil, Bolivia and Paraguay (Talbot, 1979; Lema, 1994). Chaqueña (Chaqueño
Oriental district) and Yungas provinces.
Comments: M. b. bifossatus and M. b. triseriatus overlap broadly in the transitional areas between Chaqueña
(Oriental district) and Paranaense provinces in western and southern Misiones, north Corrientes and eastern
Formosa and Chaco. In this area, specimens exist with intermediate characters as well specimens easily
assignable to the two subspecies.