You are here » home advanced search search results Atractus schach

Atractus schach (BOIE, 1827)

Can you confirm these amateur observations of Atractus schach?

Add your own observation of
Atractus schach »

Find more photos by Google images search: Google images

Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesSchach's Ground Snake 
SynonymBrachyorrhos schach BOIE 1827: 540
Brachyorrhos Schach — WAGLER 1830
Calamaria badia — SCHLEGEL 1837: 35 (part.)
Rabdosoma badium — DUMÉRIL, BIBRON & DUMÉRIL 1854: 95 (part.)
Rabdosoma badium — GÜNTHER 1858 (part.)
Atractus badius var. D — BOULENGER 1894
Atractus badius — HOOGMOED 1979
Atractus schach — HOOGMOED 1980
Atractus schach — DA CUNHA & DO NASCIMENTO 1983: 16
Atractus schach — STARACE 1998: 136
Atractus schach — PASSOS et al. 2007
Atractus schach — WALLACH et al. 2014: 80
Atractus schach — MELO-SAMPAIO et al. 2019 
DistributionFrench Guiana, Guyana, Suriname

Type locality: Guyane, restricted to Mamadam (4° 56’ N, 55° 33’ W; 33 m above sea level), Saramaca River, Sipaliwini, Suriname, by HOOGMOED 1980.  
Reproductionoviparous 
TypesLectotype: RMNH 119a, a 192 mm male ("Ancien Cabinet"of RMNH, 1820), designated by Hoogmoed, 1980: 34. 
DiagnosisDiagnosis. Atractus schach is distinguished from all congeners by the following combination of characters: (1) smooth dorsal scale rows 17/17/17; (2) postoculars two; (3) loreal moderately long; (4) temporal formula 1 þ 2; (5) supralabials seven, third and fourth contacting eye; (6) infralabials eight, first four contacting chinshields; (7) maxillary teeth seven; (8) gular scale rows three; (9) two preventrals; (10) ventrals 148–150 in females, 142–151 in males; (11) subcaudals 19–21 in females, 25–32 in males; (12) in preservative, dorsum olive brown with a series of black regular bands until midbody when becomes alternated dark greyish brown blotches separated by a vertebral line; (13) in preservative, venter cream with two parallel rows of sepia dots or square spots; (14) small body size in female (maximum 260 mm SVL) and in male (maximum 275 mm SVL); (15) moderately long tail both in female (10–11.3% SVL) and male (10–14% SVL); (16) hemipenis strongly bilobed, slightly semicapitate and semicalyculate (MELO-SAMPAIO et al. 2019: 213).

Comparisons. We restricted the comparisons by geographic proximity due to regionalization and putative endemism of GS snake. Thus, Atractus schach differs from A. aboiporu sp. nov., A. elaps, A. latifrons, A. insipidus, A. tamessari, and A. trilineatus by having 17 dorsal scale rows (vs. 15 dorsal scale rows). Regarding the GS species with 17 dorsal scales rows, Atractus schach differs from A. badius in its dorsal olive-brown colouration with greyish brown transversal bands, and cream to buff ventral colouration with scattered sepia dots (vs. ‘coral colour pattern’ with black diads separated by cream bands, venter immaculate cream anteriorly, followed by square dark brown dots from midbody to posterior region of belly). Atractus schach is distinguished from A. flammigerus by SVL < 300mm in both sexes and absence of keeled dorsal scales near cloaca (vs. adult SVL > 300 mm and presence of keels on dorsal scale rows in A. flammigerus); from A. torquatus by having SVL < 300mm in both sexes two postoculars and < 33 subcaudals (vs. one postocular and 34–47 subcaudals in females, 35–53 in males in A. torquatus from GS; Passos & Prudente, 2012); from A. zidoki by having dorsal scales without apical pits and supra-cloacal tubercles, olive-brown dorsum with dark greyish brown bands and bilobed hemipenis (vs. presence of apical pits and/or supracloacal tubercles on the dorsal scales, light brown dorsum with longitudinal series of paravertebral spots and unilobed hemipenis in A. zidoki). For the comparisons between A. schach and the new species see section ‘comparisons’ respectively for each species (MELO-SAMPAIO et al. 2019: 213). 
CommentNot listed in PETERS & OREJAS-MIRANDA 1970.

Distribution: not in Brazil (Amazonas, Acre, Pará), nor in Peru (Loreto) fide MELO-SAMPAIO et al. 2019.

Similar species: A. snethlageae, A. flammigerus. 
Etymology 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • BERNARDE, P.S., ALBUQUERQUE, S., BARROS, T.O. & TURCI, L.C.B. 2012. Serpentes do Estado de Rondônia, Brasil. Biota Neotrop. 12(3): 1-29 - get paper here
  • Bernarde, Paulo Sérgio;, Reginaldo Assêncio Machado & Luiz Carlos Batista Turci 2011. Herpetofauna da área do Igarapé Esperança na Reserva Extrativista Riozinho da Liberdade, Acre – Brasil. Biota Neotrop. 11 (3): 117-144 - get paper here
  • Boie, F. 1827. Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis van Oken 20: 508-566. - get paper here
  • Claessen, H. 2003. De slangen can de Guyana’s. Deel iv. Lacerta 61 (1): 19-27 - get paper here
  • Cunha, O R da; do Nascimento F P 1983. Ofidios da Amazonia. 20 - As especies de Atractus Wagler, 1828, na Amazonia oriental & Maranhao (Ophidia, Colubridae). Boletim do Museu Paraense Emilio Goeldi NOVA SERIE ZOOLOGIA (No. 123): 1-38
  • da Silva, Jr., N. J. and Sites, Jr., J. W. 1995. Patterns of diversity of neotropical squamate reptile species with emphasis on the Brazilian Amazon and the conservation potential of indigenous reserves. Conserv. Biol. 9 (4): 873-901 - get paper here
  • Hoogmoed M.S.; de Avila-Pires T C S 1991. Annotoated checklist of the herpetofauna of Petit Saut, Sinnamary River, French Guiana. Zoologische Mededelingen 65: 53-88 - get paper here
  • Hoogmoed, M. S. 1980. Revision of the genus Atractus in Surinam, with the ressurection of two species (Colubridae, Reptilia). Notes on the Herpetofauna of Surinam VII. Zoologische Verhandelingen (175): 1-47 - get paper here
  • Martins M. & Oliveira M E. 1993. The snakes of the genus Atractus Wagler (Reptilia: Squamata: Colubridae) from the Manaus region, central Amazonia, Brazil. Zoologische Mededelingen 67 (1-26): 21-40. - get paper here
  • Melo-Sampaio, Paulo Roberto; Paulo Passos, Antoine Fouquet, Ana Lucia Da Costa Prudente & Omar Torres-Carvajal 2019. Systematic review of Atractus schach (Serpentes: Dipsadidae) species complex from the Guiana Shield with description of three new species. Systematics and Biodiversity, 17:3, 207-229, DOI: 10.1080/14772000.2019.1611674 - get paper here
  • Mendes-Pinto, T. J. & S. Marques de Souza 2011. Preliminary assessment of amphibians and reptiles from Floresta Nacional do Trairão, with a new snake record for the Pará state, Brazilian Amazon. Salamandra 47 (4): 199-206 - get paper here
  • Morato, S.A.A.; Calixto, P.O.; Mendes, L.R.; Gomes, R.; Galatti, U.; Trein, F.L.; Oliveira, F.S.; Ferreira, G.N. 2014. Guia fotográfico de identificação da herpetofauna da Floresta Nacional de Saracá-Taquera, Estado do Pará. Curitiba: STCP Engenharia de Projetos Ltda.; Porto Trombetas: MRN – Mineração Rio do Norte S.A.; 213 p. - get paper here
  • Passos, P. & Fernandes, R. 2008. A new species of the colubrid snake genus Atractus (Reptilia: Serpentes) from the central Amazon of Brazil. Zootaxa 1849: 59–66 - get paper here
  • Passos, Paulo; Philippe J. R. Kok, Nelson R. de Albuquerque, and Gilson A. Rivas 2013. Groundsnakes of the Lost World: A Review of Atractus (Serpentes: Dipsadidae) from the Pantepui Region, Northern South America. Herpetological Monographs 27 (1): 52-86 - get paper here
  • Santos-Costa, Maria Cristina dos; Gleomar Fabiano Maschio, Ana Lúcia da Costa Prudente 2015. Natural history of snakes from Floresta Nacional de Caxiuanã, eastern Amazonia, Brazil Herpetology Notes 8: 69-98 - get paper here
  • SCHARGEL, WALTER E.; WILLIAM W. LAMAR, PAULO PASSOS, JORGE H. VALENCIA, DIEGO F. CISNEROS-HEREDIA, JONATHAN A. CAMPBELL 2013. A new giant Atractus (Serpentes: Dipsadidae) from Ecuador, with notes on some other large Amazonian congeners. Zootaxa 3721 (5): 455–474 - get paper here
  • Silva, F.M.; A.C. Menks; A.L.C. Prudente; J.C.L. Costa; A.E.M. Travassos; U. Galatti. 2011. Squamate Reptiles from municipality of Barcarena and surroundings, state of Pará, north of Brazil. Check List 7 (3): 220-226
  • Starace, Fausto 1998. Guide des Serpents et Amphisbènes de Guyane. IBIS Rouge Editions, Guadeloupe, Guyane, 450 pp.
  • Starace, Fausto 2013. Guide des Serpents et Amphisbènes de Guyane. Ibis Rouge Editions, Matoury, Guyane, ISBN 978-2-84450-407-4 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
External links  
Is it interesting? Share with others:

As link to this species use URL address:

http://reptile-database.reptarium.cz/species?genus=Atractus&species=schach

without field 'search_param'. Field 'search_param' is used for browsing search result.



Please submit feedback about this entry to the curator