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Lipinia trivittata POYARKOV, GEISSLER, GORIN, DUNAYEV, HARTMANN & SUWANNAPOOM, 2019

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Higher TaxaScincidae, Sphenomorphinae, Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common Names 
SynonymLipinia trivittata POYARKOV, GEISSLER, GORIN, DUNAYEV, HARTMANN & SUWANNAPOOM 2019: 382
Lygosoma vittigerum kronfanum — SMITH 1922: 209 (partim) (tentative)
Lipinia vittigera (partim) — MAHONY 2008: 239 (?)
Lipinia vittigera (partim) — GRISMER et al. 2011: 62 (?)
Lipinia vittigera (partim) — VASSILIEVA et al. 2016: 167 
DistributionS Vietnam (Dak Lak, Lam Dong and Binh Phuok, An Giang Provinces), N Cambodia (Preah Vihear Province)

Type locality: tree trunk in a pine forest in Chu Yang Sin NP, Dak Lak Province, Vietnam (N12.40611°, E108.35361°; 950 m elevation)  
Reproduction 
TypesHolotype: ZMMU R13920-58, adult female (Figure 14), collected by Eduard A. Galoyan on 30 March 2013.
Paratypes: ZMMU R13920-55–57, three adult males with same collection information as holotype; ZMMU R13449, adult male collected by Nikolay A. Poyarkov on the edge of a forest road in Dac Ca River valley, Bu Gia Map NP, Binh Phuok Province, Vietnam (N12.1931°, E107.2121°; 545 m a.s.l.) on 16 April 2009; ZMMU R13934-112, adult male, and ZMMU R13934-101, juvenile, collected by Eduard A. Galoyan and Anna B. Vassilieva from Loc Bac forest (operated by Loc Bac Forest Enterprise), Loc Bao Commune, Bao Lam District, Lam Dong Province, Vietnam (N11.73806°, E107.70694°; 850 m a. s.l.) on 7 April 2013; ZFMK 90419, adult female, collected by T. Hartmann from Kulen Prum Tep WS, Preah Vihear Province, Kulen District (N13.8851°, E104.8820°; 70 m a.s.l.) on 10 July 2009. 
DiagnosisDiagnosis: Small (SVL up to 44.4 mm) species of Lipinia, differentiated from congeners by the following combination of external morphological traits: external ear opening present; lower eyelid bearing large transparent spectacle; 28–32 midbody scale rows; 48 – 58 middorsal scales between parietals and point above vent; 20 – 26 subdigital lamellae under finger IV; 29 – 33 lamellae under toe IV; prefrontals in broad contact; seven supralabials, seven infralabials; middorsal light stripe from snout tip to tail base; two paravertebral dark stripes, continuing on anterior part of tail; two dorsolateral light stripes, distinct on head and anterior third of trunk; narrow lateral dark stripe from loreals to anterior half of trunk.

Comparisons: Comparisons are based on the original descriptions or descriptions provided in broader faunal and taxonomic publications (citations in the Materials and Methods section above). For distribution notes of each of the compared congeners, see the comparison section within the L. microcercus account above as well as Figure 1.
Morphological comparisons between the four members of the L. vittigera species complex from mainland Southeast Asia are summarized in Table 1. In general, Lipinia trivittata sp. nov. resembles the other members of the Southeast Asian L. vittigera complex. However, the new species can be differentiated based on the following opposing combination of characters (see Table 1 for details): L. vittigera sensu stricto (Boulenger, 1894): 15–16 subdigital lamellae under finger IV; flanks with dark and pale spots; LDS absent or indistinct; Lipinia vassilievi sp. nov. (herein): 10–11 supraciliaries; 14–15 subdigital lamellae under finger IV; 19–21 subdigital lamellae under toe IV; LDS and VDSL dissolving into two rows of irregular dark blotches; L. microcercus (Boettger, 1901) stat. nov.: MDLS narrow (one scale wide at midbody), PVDS continuing on tail; distinct LDS present from temporal region to anterior parts of tail.
Lipinia trivittata sp. nov. can be compared with other congeners bearing a middorsal light stipe by their opposing character combinations: L. albodorsalis: SVL up to 54 mm; 22– 25 midbody scale rows; dorsum pale yellow with a dark lateral stripe; L. infralineolata (Günther): SVL to 49 mm; 22 midbody scale rows; L. leptosoma: 7–10 lamellae under toe IV; L. longiceps: 24 midbody scale rows; snout elongated; back light brown with two dorsolateral stripes converging on tail base; tail golden yellow; L. macrotympanum: 21–23 midbody scale rows; prefrontals separated; hindlimbs and forelimbs not meeting when adpressed; L. miangensis: 24 midbody scale rows; back golden with two dark brown longitudinal stripes from snout to tail; dark line from eye to insertion of forelimb; L. nitens: SVL to 33.6 mm; external ear opening replaced by scaly dimple; back metallic green with pale yellow vertebral stripe; L. noctua: dorsum brown with light vertebral stripe, starting with wide and contrasting light spot on head; dark paravertebral stripes with irregular borders, often broken into row of irregular dark blotches; L. pulchella: 22 – 26 midbody scale rows; and 24 – 31 lamellae under toe IV; only one light whitish stripe present on dorsum, from snout to tail tip, becoming yellowish from midbody toward tail; L. pulchra: dorsum black with five greenish light stripes; L. rabori: SVL to 51.0 mm in males and 54.8 mm in females; 22 midbody scale rows; L. relicta: SVL to 56 mm; 20 midbody scale rows; 16–18 lamellae under toe IV; tail thick; light vertebral line present and labials each bearing small white spot; lateral dark stripe present from eye to insertion of hindlimbs; L. rouxi: dorsum brown, dark paravertebral stripes, with irregular borders, often broken into row of irregular dark blotches; L. septentrionalis: 24–26 midbody scale rows; light middorsal stripe as well as brown paravertebral stripes each bearing narrow black contour; L. subvittata: SVL 47–56 mm; dorsal longitudinal stripes extending to forearm region; 22 midbody scale rows; L. vulcania: 17 lamellae under toe IV; limbs not meeting when adpressed; dorsum brownish, scattered with dark brown spots; dark lateral stripe, scattered with whitish or yellowish spots.
Remaining congeners can be distinguished from Lipinia trivittata sp. nov. by absence of light middorsal stripe: L. auriculata; L. cheesmanae; L. inexpectata; L. nototaenia; L. occidentalis; L. sekayuensis; L. semperi; L. surda; L. venemai; and L. zamboangensis. 
CommentDistribution: A photo record of Lipinia trivittata sp. nov. from Khao Soi Dao NP in Chanthaburi Province of eastern Thailand (Figure 6D) indicates that the range of the species is likely wider than currently known and possibly extends to the Cambodian part of the Cardamoms (Poyarkov et al. 2019). 
EtymologyThe species epithet is an adjective in nominative singular (feminine gender) derived from the Latin "tri- " for three and "vitta" for a head band (see above), referring to its prominent three stripes (one light middorsal stripe and two dark paravertebral stripes) in dorsal view. 
References
  • Grismer, L.L. 2011. Lizards of Peninsular Malaysia, Singapore and their adjacent archipelagos. Edition Chimaira, Frankfurt, 728 pp. [review in Herp. Rev. 43: 155] - get paper here
  • Kwet, A. 2020. Liste der im Jahr 2019 neubeschriebenen Reptilien. Elaphe 2020 (3): 44-67
  • Mahony, Stephen 2008. Lipinia vittigera. Herpetological Review 39 (2): 239 - get paper here
  • Poyarkov Jr., N. A., Geissler, P., Gorin, V. A., Dunayev, E. A., Hartmann, T., Suwannapoom, C. 2019. Counting stripes: revision of the Lipinia vittigera complex (Reptilia, Squamata, Scincidae) with description of two new species from Indochina. Zoological Research 40(5): 358-393 - get paper here
  • Smith, M.A. 1922. Notes on Reptiles and Batrachians from Siam and Indo-China (No. 1). J. Nat. Hist. Soc. Siam 4: 203-214
  • Vassilieva, Anna B.; Eduard A. Galoyan, Nikolay A. Poyarkov, and Peter Geissler 2016. A Photographic Field Guide to the Amphibians and Reptiles of the Lowland Monsoon Forests of Southern Vietnam. Edition Chimaira, Frankfurt am Main. 324 pp.; ISBN 978-3-89973- 465-2
 
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