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Issue: Vol. 5406 No. 1: 2 Feb. 2024
Type: Article
Published: 2024-02-02
DOI: 10.11646/zootaxa.5406.1.4
Page range: 87-104
Abstract views: 73
PDF downloaded: 6

Another new species of Dibamus Duméril & Bibron, 1839 (Squamata: Dibamidae) from Nui Chua National Park, Ninh Thuan Province, Vietnam

Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia
Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia; Joint Vietnam - Russia Tropical Science and Technology Research Centre; 63 Nguyen Van Huyen Road; Nghia Do; Cau Giay; Hanoi; Vietnam
Institute for Research and Training in Medicine; Biology and Pharmacy; Duy Tan University; Da Nang; 550000; Vietnam; College of Medicine and Pharmacy; Duy Tan University; 120 Hoang Minh Thao; Lien Chieu; Da Nang; 550000; Vietnam
Joint Vietnam - Russia Tropical Science and Technology Research Centre; 63 Nguyen Van Huyen Road; Nghia Do; Cau Giay; Hanoi; Vietnam
Department Conservation of Forest and Marine resources; Nui Chua National Park; Thai An; Ninh Hai; Ninh Thuan; Vietnam
Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia
Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia; Joint Vietnam - Russia Tropical Science and Technology Research Centre; 63 Nguyen Van Huyen Road; Nghia Do; Cau Giay; Hanoi; Vietnam
Reptilia Dibamus deimontis sp. nov. Nui Chua Mountain Blind Skinks conservation Southeast asia systematics morphology sympatric distribution endemism

Abstract

A new species of dibamid lizard, Dibamus deimontis sp. nov., is described based on eight specimens collected from the highlands of Nui Chua Mountain within Nui Chua National Park, Ninh Thuan Province, southern Vietnam. Dibamus deimontis sp. nov. co-occurs with the recently described Dibamus tropcentr, but is recorded at higher elevations (670–700 m a.s.l. vs. 200–280 m a.s.l.), and in a different habitat and microhabitats than the previous species. Our study represents the first report on the near sympatric occurrence of two Dibamus species. The new species can be distinguished from other congeners by the following combination of characters: rostral, labial and nasal sutures incomplete; two to three postoculars; three to five scales on the posterior edge of infralabial; 22–25 midbody scale rows; 193–225 ventral scales; 47–55 subcaudal scales; 115 presacral and 27 tail vertebrae (in a single male specimen examined); and maximum snout-vent length 136.2 mm. We suggest this species should be considered as Vulnerable (VU) following the IUCN’s Red List categories. Our study brings the number of species in the genus Dibamus to 26; Dibamus deimontis sp. nov. is the eighth species of Dibamus recorded in Vietnam, and underlines the importance of the country as a local center of reptilian diversity in Southeast Asia.

 

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