Ichthyophis biangularis

Ichthyophis biangularis
Conservation status
	; Near Threatened (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Amphibia
Order:	Gymnophiona
Clade:	Apoda
Family:	Ichthyophiidae
Genus:	Ichthyophis
Species:	I. biangularis
Binomial name
	Ichthyophis biangularis; Taylor, 1965[2]

Ichthyophis biangularis, the angular caecilian or Metang caecilian, is a species of amphibian in the family Ichthyophiidae endemic to Borneo (Malaysia): it is only known from its type locality, Mount Matang in Sarawak,[3] where the holotype was collected in 1872 by Alfred Hart Everett.[4] New specimens were collected from the type locality only in 2009. In addition, one larval sample was collected from the same region and identified as likely Ichthyophis biangularis using genetic methods.[4]

Description

The holotype of Ichthyophis biangularis measures 258 mm (10.2 in) in total length, including 5.8 mm (0.23 in) long tail. The body is 9.8 mm (0.39 in) wide and blackish slate above and below with a yellow lateral line. The eye is dimly distinct, with a slightly lighter ring about it.[2]

Habitat

This is a little known species. It is presumed to inhabit tropical moist forests.[1]

References

IUCN SSC Amphibian Specialist Group 2019. Ichthyophis biangularis. The IUCN Red List of Threatened Species 2019: e.T59612A95756381. https://doi.org/10.2305/IUCN.UK.2019-1.RLTS.T59612A95756381.en. Downloaded on 21 July 2019.
Taylor, E. H. (1965). "New Asiatic and African caecilians with redescriptions of certain other species". University of Kansas Science Bulletin. 46: 253–302. doi:10.5962/bhl.part.20077.
Frost, Darrel R. (2014). "Ichthyophis biangularis Taylor, 1965". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 January 2015.
Nishikawa, K.; Matsui, M.; Yong, H. S.; Ahmad, N.; Yambun, P.; Belabut, D. M.; Sudin, A.; Hamidy, A.; Orlov, N. L.; Ota, H.; Yoshikawa, N.; Tominaga, A.; Shimada, T. (2012). "Molecular phylogeny and biogeography of caecilians from Southeast Asia (Amphibia, Gymnophiona, Ichthyophiidae), with special reference to high cryptic species diversity in Sundaland". Molecular Phylogenetics and Evolution. 63 (3): 714–723. doi:10.1016/j.ympev.2012.02.017. PMID 22387289.

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[IUCN-1] IUCN SSC Amphibian Specialist Group 2019. Ichthyophis biangularis. The IUCN Red List of Threatened Species 2019: e.T59612A95756381. https://doi.org/10.2305/IUCN.UK.2019-1.RLTS.T59612A95756381.en. Downloaded on 21 July 2019.

[Taylor-2] Taylor, E. H. (1965). "New Asiatic and African caecilians with redescriptions of certain other species". University of Kansas Science Bulletin. 46: 253–302. doi:10.5962/bhl.part.20077.

[frost-3] Frost, Darrel R. (2014). "Ichthyophis biangularis Taylor, 1965". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 January 2015.

[Nishikawa-4] Nishikawa, K.; Matsui, M.; Yong, H. S.; Ahmad, N.; Yambun, P.; Belabut, D. M.; Sudin, A.; Hamidy, A.; Orlov, N. L.; Ota, H.; Yoshikawa, N.; Tominaga, A.; Shimada, T. (2012). "Molecular phylogeny and biogeography of caecilians from Southeast Asia (Amphibia, Gymnophiona, Ichthyophiidae), with special reference to high cryptic species diversity in Sundaland". Molecular Phylogenetics and Evolution. 63 (3): 714–723. doi:10.1016/j.ympev.2012.02.017. PMID 22387289.