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Cercosaura parkeri (RUIBAL, 1952)

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Higher TaxaGymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards)
Subspecies 
Common NamesE: Parker's Many-fingered Teiid
Portuguese: Lagartinho-do-Folhiço-do-Pantanal 
SynonymPantodactylus schreibersii parkeri RUIBAL 1952: 518
Pantodactylus schreibersii parkeri — MEIER 1983
Pantodactylus parkeri — TEDESCO & CEI 1999
Cercosaura parkeri — DOAN 2003
Cercosaura parkeri — LANGSTROTH 2005
Pantodactylus parkeri — BERNARDE 2016 
DistributionBolivia (Amazonas), SE lowlands of Peru, Brazil (Mato Grosso), Argentina (Tucuman, Salta)

Type locality: Buenavista, Departamento de Santa Cruz, Bolivia.

Elevation: up to 2270 m (DOAN & LAMAR 2012).  
Reproductionoviparous 
TypesHolotype: MCZ 20627, paraypes: MCZ, UMMZ, AMNH 
DiagnosisDiagnosis. Differs from s. albostrigatus in not having longitudinal rows of black-tipped dorsal scales and in the females having a higher femoral pore count. It differs from s. schreibersit in having a lateral white stripe that passes through the lower half of the ear and along the side of the body.

Description. Similar in scalation to s. schreibersü except for the following: dorsal scales definitely hexagonal; lateral scales equal in size to the dorsals or slightly reduced; in a few specimens the laterals are half the length of the dorsals. Nuchals more regular than in S. schreibersi, forming true nuchal plates, but never so large as in quadrilineatus. Females have from 2/2-3/3 femoral pores while the males have 3/3-5/5.

Scale counts. Midbody, 24-29; transverse dorsal rows, 29-35; trans verse ventral rows, 18-22; gulars, 7-8.

Color. All of the 44 specimens examined were distinguished by having a white stripe originating below each eye, passing through the lower half of the ear, and above the forelimb. In a few specimens the stripe was not evident on the side of the body, while in some it con tinued along the side of the tail. This lateral stripe is bordered su periorly along all of its length by a dark-brown band. The dorsal surface of the body is of a lighter brown. In about 80 per cent of the specimens a dark vertebral stripe is present. This dark stripe may originate on the nuchal region and extend the entire length of the dorsum and onto the tail. Usually, however, this stripe is broken into an anterior nuchal stripe and a posterior sacral stripe, or the anterior stripe may be lost and only the sacral stripe remain. A few of the specimens show evidence of the dorsolateral white stripe typical of s. schreibersii. An irregular dark stripe extends from each upper labial to the neighboring lower labial. The mental region is cream-colored and spotless except for some of the scales bordering the posterior lower labials. The gulars are spotless or with a few dark flecks. The ventrals are likewise spotless; however, some of the posteriormost scales may have dark flecks. On well preserved specimens the abdomen is pink. In all the specimens the subcaudals are flecked with black. (Ruibal 1952) 
Comment 
EtymologyNamed after Dr. Hampton Wildman Parker (1897-1968), an English zoologist who studied in Cambridge. 
References
  • AVILA, LUCIANO JAVIER; LORENA ELIZABETH MARTINEZ & MARIANA MORANDO 2013. Checklist of lizards and amphisbaenians of Argentina: an update. Zootaxa 3616 (3): 201–238 - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bernarde, Paulo Sergio 2016. Predation on the lizard Pantodactylus parkeri Ruibal, 1952 (Squamata: Gymnophthalmidae) by Guira guira (Aves, Cuculidae) in the Pantanal at Pocone, Western Brazil. Herpetology Notes 9: 279-281 - get paper here
  • Doan, T.M. 2003. A new phylogenetic classification for the gymnophthalmid genera Cercosaura, Pantodactylus and Prionodactylus (Reptilia: Squamata). Zool. J. Linnean Soc. 137 (1): 101-115 - get paper here
  • Gonzalez R. C. et al. 2020. Lista dos Nomes Populares dos Répteis no Brasil – Primeira Versão. Herpetologia Brasileira 9 (2): 121 – 214 - get paper here
  • Langstroth, R.P. 2005. Adiciones probables y confirmadas para la saurofauna boliviana. Kempffiana 1 (1): 101-128
  • Meier,H. 1983. Beobachtungen an einigen Teiden aus dem bolivianischen Chaco [Ameiva ameiva, Teius cyanogaster, Cnemidophorus ocellifer, Pantodactylus schreibersii, Tupinambis rufescens]. Herpetofauna 5 (26): 30-34 - get paper here
  • RIBEIRO-JÚNIOR, MARCO A. & SILVANA AMARAL 2017. Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae. Zootaxa 4269 (2): 151-196 - get paper here
  • Ribeiro-Júnior, Marco A. & Silvana Amaral 2016. Diversity, distribution, and conservation of lizards (Reptilia: Squamata) in the Brazilian Amazonia. Neotropical Biodiversity, 2:1, 195-421 - get paper here
  • Ruibal, R. 1952. Revisionary studies of some South American Teiidae. Bull. Mus. Comp. Zool. Harvard 106: 475-529 (477?)-529. - get paper here
  • Tedesco M. E. and Cei J. M. 1999. Remarks on the taxonomic status of the Argentine subspecies of Pantodactylus schreibersii (Wiegmann, 1834) (Gymnophthalmidae, Scleroglossa, Squamata). Boll. Mus. Reg. Sci. Nat. Torino 16 (1–2): 309 – 320
  • Tedesco, M.E. 1998. Una nueva especie de Pantodactylus ( Squamata, Gymnophthalmidae) de la provincia de Corrientes, República Argentina. Facena 14: 53-62 - get paper here
 
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