taxonID	type	description	language	source
C0225AAAE78851A0ACF6C1E1B2D183E9.taxon	description	Figs 3, 4	en	Pham, Anh Van, Ziegler, Thomas, Pham, Cuong The, Hoang, Thao Ngoc, Ngo, Hanh Thi, Le, Minh Duc (2025): A new skink of the genus Scincella Mittleman, 1950 (Squamata, Scincidae) from Son La Province, northwestern Vietnam. ZooKeys 1226: 319-337, DOI: 10.3897/zookeys.1226.139655
C0225AAAE78851A0ACF6C1E1B2D183E9.taxon	diagnosis	Diagnosis. The new species can be distinguished from other species of Scincella by a combination of the following characteristics: size medium (SVL up to 594 mm); primary temporals two; external ear opening without lobules; loreals two; supralabials seven or eight; infralabials six or seven; nuchals in three pairs; midbody scales in 28 rows; dorsal scales smooth, in six rows across the back; paravertebral scales 60 – 67, not widened; ventral scales in 60 – 70 rows; ten smooth lamellae beneath finger IV and 13 – 15 beneath toe IV; toes not reaching to fingers when limbs adpressed along body; dorsal surface of body and tail bronze brown with few black spots, a dark stripe running from nostril to eye and extending from posterior corner of eye along upper part of flank to the middle of the tail.	en	Pham, Anh Van, Ziegler, Thomas, Pham, Cuong The, Hoang, Thao Ngoc, Ngo, Hanh Thi, Le, Minh Duc (2025): A new skink of the genus Scincella Mittleman, 1950 (Squamata, Scincidae) from Son La Province, northwestern Vietnam. ZooKeys 1226: 319-337, DOI: 10.3897/zookeys.1226.139655
C0225AAAE78851A0ACF6C1E1B2D183E9.taxon	description	Description of holotype. Size medium (SVL 54.86 mm), tail regenerated (TaL 35 mm); head longer than wide (HL 9.1 mm, HW 6.57 mm, SVL / HL 6.02); snout obtuse, round anteriorly; rostral wider than high, distinctly visible from above; supranasals absent; frontonasal wider than long, in contact with rostral, nasals, anterior loreals, and frontal; prefrontals not in contact with each other; frontal narrowing posteriorly, approximately 1.8 times longer than the distance to the tip of snout, in contact with prefrontals, first and second supraoculars, and frontoparietals; frontoparietals in contact with each other anteriorly, bordered by frontal, three supraoculars, parietals, and interparietal; interparietal lozenge-shaped, transparent spot posteriorly absent; parietals in contact posteriorly, posterolateral border surrounded by three scales on each side; nuchal scales in three pairs; nostril in center of nasal, in contact with rostral, frontonasal, loreal, first supralabial; loreals two, anterior loreal higher but narrower than posterior one; preocular one; presuboculars two, in contact with lower preocular, third and fourth supralabials; supraciliaries seven; supraoculars four, the first longest, the second widest, fourth supraocular followed by a small postsupraocular; postoculars three, anterior one in contact with seventh supraciliary, postsupraocular, and upper postsubocular; postsuboculars two, lower one in contact with sixth supralabial; primary temporals two, lower one in contact with sixth and seventh supralabials; secondary temporals two, upper very large, in contact with posterolateral, border of parietal, overlapped by lower one; lower eyelid with an undivided opaque window (central disc), separated from supralabials by two rows of granular scales; supralabials seven, fifth below the eye; external ear opening present, anterior margin with indistinct lobules, tympanum deeply sunk; mental wider than long, round anteriorly, in contact with anterior infralabials and postmental; infralabials seven, first small; postmental undivided, in contact with mental, first and anterior portion of second infralabials on each side, and first pair of chinshields; chinshields in three pairs, first pair in contact with each other medially, second pair separated from each other by a gular scale, and third pair separated from each other by three scales; midbody scales in 28 rows; dorsal scales smooth, in six rows across the back; paravertebral scales 67, not widened; ventral scales smooth, in 68 rows; precloacals four, inner scales overlapping outer ones, central two enlarged, left one overlapped by right one; tail thick at base, medial subcaudals widened vertical length of tail. Limbs relatively developed (SVL / FlL 4.28, SVL / HlL 3.0), pentadactyl, dorsal surface of digits covered by two scale rows on basal and by a single row on terminal phalanges; subdigital lamellae keeled, in one row under the digits, ten under fourth finger and 15 under fourth toe; toe and finger separated when adpressed along body, adpressed forelimb reaching to eye (Table 3).	en	Pham, Anh Van, Ziegler, Thomas, Pham, Cuong The, Hoang, Thao Ngoc, Ngo, Hanh Thi, Le, Minh Duc (2025): A new skink of the genus Scincella Mittleman, 1950 (Squamata, Scincidae) from Son La Province, northwestern Vietnam. ZooKeys 1226: 319-337, DOI: 10.3897/zookeys.1226.139655
C0225AAAE78851A0ACF6C1E1B2D183E9.taxon	distribution	Distribution. Scincella truongi sp. nov. is currently known only from the type locality in Son La Province, Vietnam (Fig. 1).	en	Pham, Anh Van, Ziegler, Thomas, Pham, Cuong The, Hoang, Thao Ngoc, Ngo, Hanh Thi, Le, Minh Duc (2025): A new skink of the genus Scincella Mittleman, 1950 (Squamata, Scincidae) from Son La Province, northwestern Vietnam. ZooKeys 1226: 319-337, DOI: 10.3897/zookeys.1226.139655
C0225AAAE78851A0ACF6C1E1B2D183E9.taxon	etymology	Etymology. We name the new species in honor of Prof. Dr. Truong Quang Nguyen from the Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, in recognition of his great contributions to the herpetofaunal exploration of the Indochina region. We recommend “ Truong’s Smooth Skink ” as the common English name and “ Th ằn l ằn c ổ trư ờng ” as the common name in Vietnamese for the new species.	en	Pham, Anh Van, Ziegler, Thomas, Pham, Cuong The, Hoang, Thao Ngoc, Ngo, Hanh Thi, Le, Minh Duc (2025): A new skink of the genus Scincella Mittleman, 1950 (Squamata, Scincidae) from Son La Province, northwestern Vietnam. ZooKeys 1226: 319-337, DOI: 10.3897/zookeys.1226.139655
