Tylototriton ngoclinhensis

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Ngoc Linh crocodile newt
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Urodela
Family: Salamandridae
Genus: Tylototriton
Species:
T. ngoclinhensis
Binomial name
Tylototriton ngoclinhensis
Phung, Pham, Nguyen, Ninh, Nguyen, Bernardes, Le, Ziegler & Nguyen, 2023

Tylototriton ngoclinhensis, the Ngoc Linh crocodile newt, is a species of crocodile newt native to the Central Highlands region of Vietnam. [1] First discovered in 2018, it was described as a new species in 2023. [2] Due to its small range, the newt is considered to be threatened and it has been proposed for it to be classified as endangered on the IUCN Red List. [3]

Distribution

Tylototriton ngoclinhensis is the eighth taxon of Tylototriton to be described in Vietnam, [3] but the first to be recorded in its Central Highlands region. [1] The range of T. ngoclinhensis is limited and is currently thought to be restricted to montane forests near water bodies on Ngọc Linh. [3] This means that T. ngoclinhensis has the southernmost range of all members of Tylototriton in Asia. [3] The habitat of T. ngoclinhensis is located at an altitude of 1,800 to 2,300 meters above sea level, the highest among crocodile newts. [4]

Description

Tylototriton ngoclinhensis is a moderate-sized and robust species of newt, with a snout-vent length ranging from 60.8 to 66.5 mm in males and 72.5-75.6 mm in females. [3] Tail lengths range from 57.6 to 61.8 mm in males and 62.9–67.9 mm in females. [3] Males are thought to be smaller than females.

The body of T. ngoclinhensis is black with orange-red markings covering its head, tail, limbs, and vertebral ridge. [5] In addition, a black line is present which runs from the shoulder to the eye. [6] Secondary sex characteristics are present in the species. The cloaca of males are known to have a longer slit than those of females. [3] In addition, the inner cloacal walls of males contain papilla, whereas females do not have papilla inside their inner cloacal walls. [3]

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References

  1. 1 2 Anderson, Natali (2023-07-11). "New Crocodile Newt Species Discovered in Vietnam | Sci.News". Sci.News: Breaking Science News. Retrieved 2023-07-25.
  2. "New crocodile newt discovered in Vietnam". Tuoi Tre News. July 17, 2023. Retrieved July 24, 2023.
  3. 1 2 3 4 5 6 7 8 Phung, Trung My; Pham, Cuong The; Nguyen, Truong Quang; Ninh, Hoa Thi; Nguyen, Huy Quoc; Bernardes, Marta; Le, Son Thanh; Ziegler, Thomas; Nguyen, Tao Thien (2023-07-03). "Southbound – the southernmost record of Tylototriton (Amphibia, Caudata, Salamandridae) from the Central Highlands of Vietnam represents a new species". ZooKeys (1168): 193–218. Bibcode:2023ZooK.1168..193P. doi: 10.3897/zookeys.1168.96091 . ISSN   1313-2970. PMC   10848839 . PMID   38328626.
  4. Dalton, Nia (2023-07-24). "Extraordinary new crocodile species discovered, but it looks more like an alien". mirror. Retrieved 2023-07-25.
  5. Mozter, Paw (July 5, 2023). "Southernmost Crocodile Newt Added to the List of Threatened Species". Nature World News. Retrieved July 24, 2023.
  6. VnExpress. "New crocodile newt species discovered in Vietnam - VnExpress International". VnExpress International – Latest news, business, travel and analysis from Vietnam. Retrieved 2023-07-25.