taxonID	type	description	language	source
C1AC08814FC759A891AC7ACAEECD2054.taxon	etymology	Etymology. The specific name Tylototriton sini refers to the outstanding biologist Prof. Shu-Szi Sin (= Shu-Zhi Xin, 辛树帜, 1894 - 1977). During his position at Sun Yat-sen University (1927 - 1931), Prof. Shu-Szi Sin organized repeated biology surveys throughout Guangxi, Guangdong, Guizhou, Hunan, and Hainan in southern China, pochally promoting the developments of zoological and botanic studies in this region. He collected specimens of T. asperrimus for the first time, as well as other amphibians and reptiles such as Quasipaa shini (Ahl, 1930) and the famous Shinisaurus crocodilurus Ahl, 1930. His family name " Sin " was mispronounced as " Shin " by the German researchers (Beolens et al. 2011), and we decided to use the correct spelling for this new species as Tylototriton sini sp. nov. in honor of Prof. Sin and his contributions.	en	Lyu, Zhi-Tong, Wang, Jian, Zeng, Zhao-Chi, Zhou, Jia-Jun, Qi, Shuo, Wan, Han, Li, You-Yu, Wang, Ying-Yong (2021): A new species of the genus Tylototriton (Caudata, Salamandridae) from Guangdong, southern China, with discussion on the subgenera and species groups within the genus. Vertebrate Zoology 71: 697-710, DOI: http://dx.doi.org/10.3897/vz.71.e73563, URL: http://dx.doi.org/10.3897/vz.71.e73563
C1AC08814FC759A891AC7ACAEECD2054.taxon	diagnosis	Diagnosis. (1) Dorsolateral bony ridges on head low; (2) quadrate spines absent; (3) medium body size, TOL 118.4 - 124.5 mm in males, 144.5 mm in a single female; (3) snout obtusely rounded in dorsal view and rounded in lateral profile; (4) head longer than wide, HW / HL ratio 0.87 - 0.95; (5) supratemporal bony ridges and the sagittal ridge on head distinctly visible; (6) limbs slender, tips of forelimb and hindlimb overlapping when adpressed along the body; (7) vertebral ridge distinct, relatively smooth, not segmented; (8) rib nodules 12 - 13, relatively small, distinctly isolated from each other; (9) ground coloration dark brown; (10) digits orange with irregular dark brown mottling; (11) in breeding season, rib nodules mottled with orange coloration, much brighter in the first two rib nodules; (12) in breeding season, lateral tail dark brown, fin with dorsal orange margin, ventral tail ridge orange.	en	Lyu, Zhi-Tong, Wang, Jian, Zeng, Zhao-Chi, Zhou, Jia-Jun, Qi, Shuo, Wan, Han, Li, You-Yu, Wang, Ying-Yong (2021): A new species of the genus Tylototriton (Caudata, Salamandridae) from Guangdong, southern China, with discussion on the subgenera and species groups within the genus. Vertebrate Zoology 71: 697-710, DOI: http://dx.doi.org/10.3897/vz.71.e73563, URL: http://dx.doi.org/10.3897/vz.71.e73563
C1AC08814FC759A891AC7ACAEECD2054.taxon	description	Description of the holotype. SYS a 008354 (Figs 3, 4 A), adult male with a stout body, medium in size (SVL 62.0 mm, TAL 56.4 mm). Head longer than wide (HW / HL ratio 0.93); maximum head width slightly larger than the maximum trunk width; head nearly rounded hexagonal in shape in dorsal view, depressed, gently sloping in profile. Snout obtusely rounded in dorsal view, rounded in profile view, projecting beyond lower jaw. Nostril on anterior margin of snout, located notably closer to snout tip than to eye, with anterolateral orientation, not visible from dorsal view. Tongue oval, not notched distally; vomerine tooth series in an inverted ' V' shape, converging anteriorly but not reaching choanae. Parotoids distinct, large, crescentshaped, slightly projecting posteriorly. Dorsolateral supratemporal bony ridges on head wide, distinctly protruding, beginning at the anterior corner of orbit continuing to anterior end of parotoid, posterior ends slightly curved inside; sagittal bony ridge on head strong. Vertebral middorsal ridge distinct, wide, not segmented, running from occiput region to sacrum and the base of tail. Rib nodules distinct, relatively small, distinctly isolated from each other but arranged in two longitudinal series on dorsolateral surfaces of dorsum from shoulder to base of tail, counting 13 nodules on each side of body. Limbs slender, forelimb and hindlimb overlapping when adpressed towards each other along body; fingers and toes well developed, lacking webbing or fringes; relative finger lengths I <IV <III = II, relative toe lengths I = V <II <III = IV. Tail long, TAL / SVL ratio 0.91; laterally compressed along entire length, tapering posteriorly, lateral grooves on tail distinctly visible in dorsal view. Skin of dorsum, flanks, and lateral sides of tail very rough with small granules and larger warts. Skin of head ridges and middorsal vertebral ridge relatively smooth. Skin of limbs with numerous tiny tubercles. Ventral surfaces relatively smoother, corrugated, with smaller granules arranged in transverse striations; throat with numerous tiny flat tubercles; weak gular fold present. Cloacal region slightly swollen, vent as a longitudinal slit, vent edges with numerous small transverse folds.	en	Lyu, Zhi-Tong, Wang, Jian, Zeng, Zhao-Chi, Zhou, Jia-Jun, Qi, Shuo, Wan, Han, Li, You-Yu, Wang, Ying-Yong (2021): A new species of the genus Tylototriton (Caudata, Salamandridae) from Guangdong, southern China, with discussion on the subgenera and species groups within the genus. Vertebrate Zoology 71: 697-710, DOI: http://dx.doi.org/10.3897/vz.71.e73563, URL: http://dx.doi.org/10.3897/vz.71.e73563
C1AC08814FC759A891AC7ACAEECD2054.taxon	distribution	Distribution. Tylototriton sini sp. nov. is currently known only from its type locality Mt Yunkai and the neighboring Mt Ehuangzhang (this study; Hernandez 2018), both situated in the Yunkai Mountains of western Guangdong.	en	Lyu, Zhi-Tong, Wang, Jian, Zeng, Zhao-Chi, Zhou, Jia-Jun, Qi, Shuo, Wan, Han, Li, You-Yu, Wang, Ying-Yong (2021): A new species of the genus Tylototriton (Caudata, Salamandridae) from Guangdong, southern China, with discussion on the subgenera and species groups within the genus. Vertebrate Zoology 71: 697-710, DOI: http://dx.doi.org/10.3897/vz.71.e73563, URL: http://dx.doi.org/10.3897/vz.71.e73563
