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Chironius Fuscus (Linnaeus, 1758) (Serpentes: Colubridae)

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Chironius Fuscus (Linnaeus, 1758) (Serpentes: Colubridae) Check List 8(6): 1315–1318, 2012 © 2012 Check List and Authors Chec List ISSN 1809-127X (available at www.checklist.org.br) Journal of species lists and distribution N Chironius fuscus (Linnaeus, 1758) (Serpentes: Colubridae): ISTRIBUTIO southern Brazil D Distribution extension, new state record and variation in 1* 2,3 4 RAPHIC , Julio Cesar de Moura-Leite , Emilson Grochoski Matias and Sérgio G Augusto Abrahão Morato 5 EO Gilberto Alves de Souza Filho G N O 1 Hori Consultoria Ambiental. Rua Coronel Temístocles de Souza Brasil, 311. CEP 82.520-210. Curitiba, PR, Brazil. 2 Museu de História Natural Capão da Imbuia, Laboratório de Herpetologia. Rua Professor Benedito Conceição, 407. CEP 82810-080. Curitiba, PR, Brazil. OTES N 80215-901. Curitiba, PR, Brazil. 43 Companhia Pontifícia Universidade de Saneament Católicao do Paraná. do Paraná, Rua MiguelCurso de Pedro Biologia Abib, e 179.Núcleo CEP de 82980-410. Estudos do Curitiba, Comportamento. PR, Brazil. Rua Imaculada Conceição, 1155. CEP 5 STCP Engenharia de Projetos Ltda. Rua Euzébio da Motta, 450. CEP 80530-260. Curitiba, PR, Brazil. * Corresponding author. E-mail: [email protected] Abstract: The colubrid snake Chironius fuscus (Colubridae) is a widely distributed species in South America, exhibiting a disjunct distribution associated to rainforests of Amazonia and Eastern Brazil (from Pernambuco to Paraná States). In this study, we present new distributional data from Paraná state and extend the known range to the state of Santa Catarina. We also present meristic and morphometric data of the southernmost populations of the species. The colubrid genus Chironius Atlantic forests. This species is widely distributed in group of Neotropical snakes, whose monophyly is strongly supported by hemipenial and pholidoticFitzinger, characters 1826 (Hollis is a 2006). The genus is characterized by the presence of low, (DixonAmazonia, and with Soini records 1977; frDuellmanom Bolivia, 1978; Peru, Gasc Ecuador, and RodriguesColombia, V1980;enezuela, Miyata Gu 1982;yana, SurinameHoogmoed e 1982; French Chippaux Guyana currently comprises 16 species (Dixon et al. 1993; Hollis et al. 1993; Kok even number (10 or 12) of dorsal scale rows at midbody and et al. 2012). In Brazil, C. fuscus was recorded terrestrial to arboreal and distributed from Honduras in in1986; all AmazonianFugler 1988; states Pefaur (Hoge 1992; 1967; Dixon Hoge et al. 1972; Central2006; K Americaok 2010; and Uetz Saint 2012). Vincent These Island species in the ar Caribbeane diurnal, Cunha2010; Riandvas Nascimento 1982; 1993; Cunha et al. 1985; Nascimento et al. 1988; Zimmermann and Rodrigues South America (Dixon et al. 1993; Hollis 2006). In Brazil, 1990; Dixon et al. 11Seao speciest the mouth are recognized: of the Río de Chironius la Plata, Urugua bicarinatusy, in southern (Wied, et al. et 1820), C. carinatus (Linnaeus, 1758), C. exoletus (Linnaeus, al. 2005). In Eastern1993; Brazil, Silva-Jr. the species 1993; Sil is va-Jr.associated and Sit toes-Jr. the 1758), C. flavolineatus (Jan, 1863), C. foveatus Bailey, 1955, 1995; Martins and Oliveira 1998; Yuki 1999; Frota C. fuscus (Linnaeus, 1758), C. laevicollis (Wied, 1824), C. to Paraná states (Amaral 1978; Bailey 1955; Marques et laurenti Dixon, Wiest nad Cei, 1993, C. multiventris Schmidt al.Atlantic Forest domain, with records from Pernambuco nad Walker, 1943, C. quadricarinatus (Boie, 1827), and C. 2004; Bérnils et al. 2007; Centeno et al. 2008; Pontes and scurrulus (Wagler, 1824) (Bérnils and Costa 2011). Rocha 2001; 2008; Freitas Pontes 2003; et al.Mar 2008;ques andPontes Sazima et al. 2004; 2009; Ar Sallesgôlo Chironius fuscus is distinguished from the other species et al. of the genus Chironius by presenting a combination of 10 Vrcibradic et al. 2011). Certainly, the records of this species forand the Sil va-Soaresstate of Paraná 2010; (Marques Salles et al. 2010; 2001; F Bérnilsreitas 2011; et al. lowerdorsal portionscales at of midbod the supralabialsy, anal plat creame single, colored paravertebral and 39 toscales 51 maxillaryvarying fr teethom smooth (Dixon t oet str al.ongly 1993). keeled These or authorsabsent, specimens.2007)e ar based on herpetological collections. However, recognized two subspecies, C. f. fuscus widely distributed the Inlit eraturethis study, brings we nopresent explicit the indication known localitiesof voucher of in South America, and C. f. leucometapus, restricted to occurrence of Chironius fuscus in Paraná, as well as a range the highlands of eastern Andean slope in Peru. We agree extension of the species for the state of Santa Catarina. with Hollis (2006) that the morphological differences Considering distribution and taxonomic problems related and distribution data presented by Dixon et al. (1993) C. f. leucometapus species. Thus, the concept of C. fuscus recognized in this presentto the species, meristic and (pholidotic) the limit anded infmorphometricormation available data of 18in workare sufficient is restricted for r toecognizing the nominal subspecies. as a valid specimensthe literature from regarding Paraná and its twomorphological of Santa Catarina, variation, housed we Chironius fuscus presents a in the herpetological collection of the Museu de História disjunct distribution, occurring in the Amazonian and Natural Capão da Imbuia, municipality of Curitiba, Paraná From this perspective, 1315 Souza-Filho et al. | Distribution extension of Chironius fuscus (MHNCI). Coordinates of the localities were obtained from Google Earth Software Version 5.1.3535.3218 (Datum WGS 84). Coordinates of the municipal seats are presented when information about the precise location of records . The occurrence of Chironius fuscus in the state of was not available 1): Municipality of Antonina: “Bairro Alto” (25°15’49” S, 48°44’24”Paraná is confirmedW; 17 m), bMHNCIy the f11325;ollowing “Cacatu” toponyms (25°18’32” (Figure (approximatelyS, 48°45’36” W ;25°18’47” 81 m), MHNCI S, 48°40’48” 11164 W;(Figur 6 m),e 2); MHNCI “PR- 405, between Lageado and Fazenda Bom Jesus I” 12540; “Reserva Natural do Rio Cachoeira, Trilha do Meio” (25°15’13” S, 48°40’05” W; 70 m), MHNCI 11947; “Reserva Natural do Rio Cachoeira, mouth of the Faisqueira 7River” m), (25°24’4MHNCI 7”11957. S, 48°39’52” Municipality W; 12 m),of MHNCIGuaraqueçaba: 11227; “Curitibaíba River, PR-340” (25°23’10” S, 48°46’57” W; MHNCI 392, MHNCI 7625, MHNCI 7720, MHNCI 9198; “Tagaçaba”no specific (25°13’21”locality (25°17’14” S, 48°27’23” S, W;48°19’01” 9 m), MHNCI W; 23 3183. m), Municipality of Guaratuba: “Cabaraquara, access to the Iate Figure 1. Localities of record of Chironius fuscus in the states of Paraná (PR) and Santa Catarina (SC). Municipality of Guaraqueçaba: 1 - Tagaçaba; Clube” (25°50’12” S, 48°34’20” W; 18 m), MHNCI 6911. Municipality of Antonina: 2 - Bairro Alto, 3 - Cacatu, 4 - PR-405, between 48°49’54” W; 24 m), MHNCI 10512; “Anhaia” (25°30’14” S, Lageado and Fazenda Bom Jesus I, 5 - Reserva Natural do Rio Cachoeira, 48°50’45”Municipality W; of 25 Morr m), MHNCIetes: no 10235; specific “São locality João (25°28’44” da Graciosa” S, Trilha do Meio, 6 - Reserva Natural do Rio Cachoeira, mouth of the (25°23’21”S,48°52’57” W; 245 m), MHNCI 12844; Paranaguá:Faisqueira Ri 11ver, - Ilha 7 - doCuritibaíba Mel; Municipality River, PR of-340; Guaratuba: Municipality 12 - Cabaraquara, of Morretes: 8 - São João da Graciosa, 9 - Sapetanduva, 10 - Anhaia; Municipality of 11617. accesso t the Iate Clube; Municipality of São Francisco do Sul: 13 - Vila da “Sapetanduva” (25°27’22” S, 48°48’43” W; 20 m), MHNCI Glória, CEPA/UNIVILLE. Municipality of Paranaguá: no specific locality 3543.(25°31’13” S, 48°30’34” W; sea level), MHNCI 11464; “Ilha females (mean 146.3; s 3.72; n = 6). Subcaudals 115-122 do Mel” (25°32’32” S, 48°18’02”Chironius W ; fuscussea le vel),from MHNCI Santa ins male (mean 119.0; s 2.45; n = 9), 118-123 in females Catarina are based on two specimens (MHNCI 11878, (mean 121.0; s 2.12; n = 5). Ventrals plus subcaudals 263- The first records of 274 in males (mean 266.6; s 3.78; n = 9), 261-269 in females Dixon(mean et 266.2; al. s 3.27; n = 5). Anal plate single. In order to 12022) obtained during field surveys in the “Centro de analyze the pholidotic variation found in the species, Estudos e Pesquisas Ambientais of the Universidade de C. f. leucometapus(1993) ),subdi organizedvided the geographically. existing sample Based in se venon Joinville” (CEPA/Univille), located in “Vila da Glória”, sub-samples (the seventh corresponding to the subspecies municipality of São Francisco do Sul, northern coast of that State (26°13’10” S, 48°42’09” W; 305 m; Figure the analysis of the number of ventrals plus subcaudals, montane1) (collection dense permit ombrophylous from IB AMAforest numberat different 96/2004). stages etthese al. authors found no significant differences between ofThe regeneration, area is predominantly ranging from composed secondary of (“capoeira”)lowland/lower to specimensthe sub-sample froms. southeasternHowever, the Brazilvariation (sub-sample observed I)(Dix thanon primary forests with low anthropogenic impact, located in for the 1993: Amazonian figure 29, specimens page 121) (sub-samples showed lower II-VI), values with for slopes where the access is very difficult. The first specimen a mean estimated based on the etfigur al.e, (1993) between for 266the sub-and 19(male; December adult; hemipenis2004, on the partiall road,y near everted; a forested SVL = area.570 mm; The 267sample scales. from Our the data southeast (mean region.266.43; s 3.48) are very similar tail length = 320 mm; MHNCI 11878) was found dead on to theThe v hemipenisalues obtained of Chironius by Dixon fuscus insecond a forested individual area on(female; 03 April adult; 2006. SVL = 615 mm; tail length wasy briefl described = 370Among mm; MHNCIall the 12022)specimens was analyzedfound acti theve on largest the gr oundtotal byy Baile (1955), based on a dissected (not everted) organ.
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