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Gonyosoma jansenii (BLEEKER, 1859)

IUCN Red List - Gonyosoma jansenii - Least Concern, LC
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Higher TaxaColubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Celebes Black-tailed Ratsnake
G: Celebes-Schwarzschwanznatter 
SynonymElaphe janseni BLEEKER 1859: 242
Allophis (Elaphis) nigricaudus PETERS 1872
Coluber janseni — BOULENGER 1894: 57
Coluber janseni — BOULENGER 1897: 220
Coluber janseni — WERNER 1927: 244
Gonyosoma jansenii — DOWLING 1958
Gonyosoma jansenii — TAYLOR 1965: 712
Gonyosoma jansenii — BAUER et al. 1995: 69
Elaphe janseni — SCHULZ 1996: 151
Gonyosoma jansenii — DE LANG & VOGEL 2005
Gonyosoma jansenii — WALLACH et al. et al. 2014
Gonyosoma jansenii — CHEN et al. 2014
Gonyosoma jansenii — WALLACH et al. 2024 
DistributionIndonesia: Sulawesi

Type locality: Indonesia: Sulawesi, Manado (Bleeker, 1858)
Type locality: “Nordcelebes” [Allophis (Elaphis) nigricaudus PETERS 1872]  
Reproductionoviparous 
TypesHolotype: BMNH 1946.1.6.20 (formerly BMNH 1863.12.4.134), adul male
Holotype: ZMB 7468 [Allophis (Elaphis) nigricaudus PETERS 1872] 
DiagnosisDiagnosis (elegans): Taylor 1965: 712


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CommentSynonymy: Taylor 1965: 713 lists Gonyosoma jansenii elegans Werner 1925 but there is no such species in the paper cited (Werner 1925, Sitzungsb. Akad. Wiss., Wien, Abt. l, 134: 55-56).

Habitat: partly arboreal (Harrington et al. 2018). 
EtymologyNamed after Albert Jacques Frederic Jansen, an administrator in the Dutch East Indies (now Indonesia) who lived on Sulawesi and later became Governor-General of Batavia (now Jakarta) (1848). 
References
  • Bauer, A.M.; Günther,R. & Klipfel,M. 1995. The herpetological contributions of Wilhelm C.H. Peters (1815-1883). SSAR Facsimile Reprints in Herpetology, 714 pp.
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bleeker, P. 1859. Gonyosoma jansenii Blkr., eene nieuwe slang van Manado. Natuurk. Tijdschr. Ned. Indië (4) 16:<br />242 - get paper here
  • Boulenger, G.A. 1897. A catalogue of the reptiles and batrachians of Celebes with special reference to the collections made by Drs P & F Sarasin in 1893-1896. Proc. Zool. Soc. London 1897: 193-237 [p228-237: batrachia] - get paper here
  • Boulenger, George A. 1894. Catalogue of the snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. British Mus. (Nat. Hist.), London, xi, 382 pp. - get paper here
  • Chen, Xin; Alexander d. Mckelvy, L. Lee Grismer, Masafumi Matsui, Kanto Nishikawa, Frank T. Burbrink 2014. The phylogenetic position and taxonomic status of the Rainbow Tree Snake Gonyophis margaritatus (Peters, 1871) (Squamata: Colubridae). Zootaxa 3881 (6): 532–548 - get paper here
  • Dowling, Herndon G. 1958. A taxonomic study of the ratsnakes VI. Validation of the genera Gonyosoma Wagler and Elaphe Fitzinger. Copeia 1958 (1): 29-40 - get paper here
  • Gumprecht, A. 2004. Spitzkopfnattern (die Gattung Gonyosoma). Natur und Tier Verlag (Münster), 64 pp. - get paper here
  • Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - get paper here
  • Koch, A. 2012. Discovery, Diversity, and Distribution of the Amphibians and Reptiles of Sulawesi and its offshore islands. Edition Chimaira, 374 pp. [ISBN 978-3-89973-432-4] - get paper here
  • Lang, Ruud de & G. Vogel 2005. The snakes of Sulawesi. A field guide to the land snakes of Sulawesi with identification keys. Edition Chimaira, Frankfurter Beiträge zur Naturkunde, 25, Frankfurt am Main, 312 pp.
  • Peters, Wilhem Carl Hartwig 1872. Über eine neue von Hrn. Dr. A. B. Meyer auf Luzon entdeckte Art von Eidechsen (Lygosoma (Hinulia) leucospilos) und eine von demselben in Nordcelebes gefundene neue Schlangengattung (Allophis nigricaudus). Monatsber. königl. Akad. Wiss. Berlin. 1872 (August): 684-687 - get paper here
  • Schulz, K. D. 1996. Eine Monographie der Schlangengattung Elaphe Fitzinger. Bushmaster, Berg (CH): 1-460
  • Schulz, K.-D. & A. Gumprecht 1999. Zur Kenntnis, Pflege und Zucht einer wenig bekannten Natter aus Indonesien, Gonyosoma janseni Bleeker, 1858. Sauria 21 (3): 27-32 - get paper here
  • Schulz, Klaus-Dieter 1996. A monograph of the colubrid snakes of the genus Elaphe Fitzinger. Koeltz Scientific Books, 439 pp.
  • Taylor,E.H. 1965. The serpents of Thailand and adjacent waters. Univ. Kansas Sci. Bull. 45 (9): 609-1096 - get paper here
  • Tepedelen, Kamuran;Smith, Hobart M. 1998. Elaphe janseni (Celebes Black-tailed Ratsnake). Maximum Size. Herpetological Review 29 (4): 241 - get paper here
  • Wallach, V., Midtgaard, R., & Hsiao, E. 2024. Revalidation of the Arboreal Asian Snake Genera Gonyophis Boulenger, 1891; Rhynchophis Mocquard, 1897; and Rhadinophis Vogt, 1922, with Description of a New Genus and Tribe (Squamata: Serpentes: Colubridae). Diversity, 16(9), 576 - get paper here
  • Wanger, T. C., I. Motzke, S. Saleh & D. T. Iskandar 2011. The amphibians and reptiles of the Lore Lindu National Park area, Central Sulawesi, Indonesia. Salamandra 47 (1): 17-29 - get paper here
  • Werner, F. 1927. Neue oder wenig bekannte Schlangen aus dem Wiener naturhistorischen Staatsmuseum (III. Teil). Sitzungsb. Akad. Wiss. Wien, Math. Naturwiss. Kl. 143 [135?]: 243-257 [1926] - get paper here
 
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