Gonyosoma jansenii

Gonyosoma jansenii
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Colubridae
Genus:	Gonyosoma
Species:	G. jansenii
Binomial name
	Gonyosoma jansenii; Bleeker, 1858
Synonyms
	Gonyosoma janseni ; Bleeker, 1858; Allophis (Elaphis) nigricaudus ; W. Peters, 1872; Coluber janseni ; — Boulenger, 1894; Gonyosoma jansenii ; — Dowling, 1958; Elaphe janseni ; — Schulz, 1996; Gonyosoma jansenii ; — Wallach et al., 2014;

Gonyosoma jansenii, commonly known as the Celebes black-tailed rat snake, the Celebes ratsnake, and Jansen's rat snake, is a species of snake in the subfamily Colubrinae of the family Colubridae. The species is endemic to the Indonesian island of Sulawesi.^[2]

Etymology

The specific name, jansenii, is in honor of Albert Jacques Frédéric Jansen, who was an administrator in the Dutch East Indies.^[3]

Habitat

The preferred natural habitat of G. jansenii, is forest, at altitudes from sea level to 1,000 m (3,300 ft).^[1]

Description

A long snake, G. jansenii may attain a total length of 199 cm (6.53 ft), which includes a tail length of 45 cm (1.48 ft). Adults are olive or yellowish brown on the anterior and middle portions of the body, with some scales black-edged. They are entirely black on the posterior portion of the body and tail (Boulenger, 1894).

Behavior

G. jansenii is semi-arboreal.^[1]^[2]

Reproduction

G. jansenii is oviparous.^[2]

References

^ ^a ^b ^c Rusli, N.; Gillespie, G. (2021). "Gonyosoma jansenii ". IUCN Red List of Threatened Species. 2021: e.T104839453A104853990. doi:10.2305/IUCN.UK.2021-3.RLTS.T104839453A104853990.en. Retrieved 30 December 2022.
^ ^a ^b ^c ^d Gonyosoma jansenii at the Reptarium.cz Reptile Database. Accessed 23 December 2018.
^ Beolens B, Watkins M, Grayson M (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Gonyosoma jansenii, p. 133).

Bleeker P (1858). "Gonyosoma Jansenii Blkr, eene nieuwe slang van Manado". Natuurkundig Tijdschrift voor Nederlandsch Indië 16: 242. (Gonyosoma jansenii, new species, p. 242). (in Dutch).
Boulenger GA (1894). Catalogue of the Snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xi + 382 pp. + Plates I–XX. (Coluber janseni, pp. 57–58 + Plate I, figure 2, dorsal and lateral views of head).
Dowling HG (1958). "A Taxonomic Study of the Ratsnakes VI. Validation of the Genera Gonyosoma Wagler and Elaphe Fitzinger". Copeia 1958 (1): 29–40.
Koch A (2012). Discovery, Diversity, and Distribution of the Amphibians and Reptiles of Sulawesi and its offshore islands. Frankfurt am Main, Germany: Edition Chimaira. 374 pp. ISBN 978-3-89973-432-4.

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[iucn_status_30_December_2022-1] Rusli, N.; Gillespie, G. (2021). "Gonyosoma jansenii ". IUCN Red List of Threatened Species. 2021: e.T104839453A104853990. doi:10.2305/IUCN.UK.2021-3.RLTS.T104839453A104853990.en. Retrieved 30 December 2022.

[RDB-2] Gonyosoma jansenii at the Reptarium.cz Reptile Database. Accessed 23 December 2018.

[3] Beolens B, Watkins M, Grayson M (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Gonyosoma jansenii, p. 133).

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