Intraspecific Variation of the Hemipenis in Siphlophis and Tripanurgos

Natural History of Pseudoboine Snakes

“…Distribution: Siphlophis cervinus is distributed throughout the Amazon Forest, in Bolivia, Brazil, Colombia, Ecuador, French Guyana, Peru, Suriname, and Venezuela, as well as in Trinidad and Tobago and Panama (Hoge & Nina, 1969;Cunha & Nascimento, 1978Duellman, 1978Duellman, , 2005Gasc & Rodrigues, 1980;Dixon & Soini, 1986;Nascimento et al, 1987;Pérez-Santos & Moreno, 1988;Silva, 1993;Murphy, 1997;Barrio et al, 1998;Martins & Oliveira, 1998;Prudente et al, 1998;Zaher & Prudente, 1999;Santos-Costa, 2003;Frota et al, 2005;Maschio, 2008;Silva et al, 2010).…”

“…Distribution: Siphlophis compressus is mainly distributed in the Amazon Forest in Brazil, Colombia, Ecuador, French Guyana, Peru and Trinidad and Tobago, as well as in the Atlantic Forest of eastern and northeastern Brazil (Beebe, 1946;Hoge, 1967;Fitch, 1970;Cunha & Nascimento, 1978Duellman, 1978;Gasc & Rodrigues, 1980;Riley & Winch, 1985;Dixon & Soini, 1986;Silva, 1993;Murphy, 1997;Martins & Oliveira, 1998;Prudente et al, 1998;Yuki et al, 1999;Zaher & Prudente, 1999;Santos-Costa, 2003;Argôlo, 2004;Neckel-Oliveira & Gordo, 2004;Frota et al, 2005;Bernarde & Abe, 2006;Maschio, 2008;Prudente et al, 2010;Silva et al, 2010;Ávila & KawashitaRibeiro, 2011;Guedes et al, 2011;Vilela et al, 2011).…”

New Taxa and Cryptic Species of Neotropical Snakes (Xenodontinae), with Commentary on Hemipenes as Generic and Specific Characters

“…INTRASPECIFIC VARIATION IN HEMIPE-NIAL EVERSION: Zaher and Prudente (1999) (Cope) showing complete loss of bilobation and complete loss of bifurcation in the now-single sulcus spermaticus, which extends from the base to one side of the apex (AMNH R-138683, right organ). D. T. nicagus, an uneverted hemipenis, showing the unbifurcated sulcus spermaticus that extends to the apex, where it is largely concealed by the close-pressed sulcus lips (MCZ 149545, left organ).…”

On the snake Siphlophis worontzowi (Prado, 1940): notes on its distribution, diet and morphological data

“…13°25′ S, 056°42′ W), extends ca. 350 km southwards and 450 km southeastwards the species distribution from the closest records at Alta Floresta municipality, Mato Grosso state and Espigão D'Oeste municipality, Rondônia state, respectively (Zaher and Prudente 1999;Bernarde and Abe 2006;Costa et al 2010). MZUSP 11251 was collected at Cláudia municipality, located in the east-central part of Mato Grosso state (ca.…”

“…The snake Siphlophis worontzowi (Prado 1940) is an Amazonian dipsadid widely distributed occurring from Santarém, Pará state, Brazil to Tinkanari, Cuzco, Peru (Prado 1940;Silva-Jr. 1993;Zaher and Prudente 1999;Santos-Jr. et al 2003;Vriesendorp et al 2004;Frota et al 2005; Bernarde and Abe 2006, Moravec et al, 2009;Costa et al 2010;Kawashita-Ribeiro et al 2011;Bernarde et al 2012;Matos and Melo-Sampaio 2013). Although these records cover a wide area of the Amazon basin they account only for a few localities; all of them on the south (right bank) of Amazon and Madeira Rivers.…”