Dibamus deimontis KLIUKIN, BRAGIN, VAN NGUYEN, LE,TRAN, GORIN & POYARKOV, 2024
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Higher Taxa | Dibamidae, Sauria, Squamata (lizards) |
Subspecies | |
Common Names | |
Synonym | Dibamus deimontis KLIUKIN, BRAGIN, VAN NGUYEN, LE,TRAN, GORIN & POYARKOV 2024 |
Distribution | S Vietnam (Ninh Thuan) Type locality: eastern slope of Nui Chua Mountain within Nui Chua National Park, thai An Village, Vinh Hai Commune, Ninh Hai District, Ninh Thuan Province, southern Vietnam (11.723°N, 109.137°e; elevation 695 m a.s.l.) |
Reproduction | |
Types | Holotype. ZMMu re-17821, Adult male; field tag NAP-13707) collected on March 3, 2023, at 10:00 h by A. M. Bragin, N. A. Poyarkov, and S. X. Le. Paratypes (n=7). ZMMu re-17822 (field tag NAP-13640), ZMMu re-17824 (field tag NAP-13706) and VrtC NAP-13708 (field tag NAP-13708), three adult males collected at the same locality as the holotype on March 3–5, 2023 from the elevations 670–700 m a.s.l.; ZMMu re-17823 (field tag NAP-13641), ZMMu re-17825 (field tag NAP-13709), and ZMMu re-17826 (field tag NAP-13710), ZMMu re-17827 (field tag NAP-13711), two adult females and two subadult females, respectively, with the same collection information as the holotype and other paratypes. |
Diagnosis | Diagnosis: the new species is assigned to Dibamus based on the following morphological characters: (1) worm-like body shape, fore limbs absent, hind limbs rudimentary, present only in males, forming flap-like structures located near the base of the tail above the vent; (2) eyes rudimentary, completely covered by scales; (3) external ear openings absent; (4) enlarged plate-like scales on the head; (5) postorbital bone absent; (6) epipterygoid absent; (7) temporal bone absent; (8) ribs on last presacral vertebra absent; (9) tail length less than 34.0% of SVl; (10) subcaudal scales in females reduced to 64; and (11) postsacral vertebrae reduced to 36 in a single male (greer 1985). the new species Dibamus deimontis sp. nov. can be distinguished from all other congeners by the following combination of morphological characters: (1) maximum SVl of 136.2 mm; (2) tail comparatively long, tl comprising 18.6–22.1% of SVl in males, 17.6–20.2% of SVl in females; (3) labial, nasal, medial and lateral rostral sutures present but incomplete; (4) postocular scales generally three, rarely two; (5) three to five scales bordering the posteromedial edge of the first infralabial; (6) the medial sublabial scale not enlarged; (7) 22–25 midbody scale rows; (8) 25–30 transverse scale rows just posterior to head; (9) 19–21 transverse scale rows just anterior to vent; (10) 193–225 ventral scales; (11) 47–55 subcaudal scales; (12) relative size of frontal to frontonasal 106.7–133.8%; (13) relative size of interparietal to surrounding scales 97.2–115.0%; and (14) the light colored band on the body generally present. (Kliukin et al. 2024) |
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