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Higher TaxaLiolaemidae, Iguania, Sauria, Squamata (lizards)
Common Names 
Liolaemus boulengeri — CEI 1986
Liolaemus loboi — ABDALA & LOBO 2006
Liolaemus boulengeri — PINCHEIRA-DONOSO 2007
Liolaemus (Eulaemus) purul — MORANDO et al. 2020 
DistributionArgentina (Neuquén)

Type locality: 6 km N of San Ignacio, on the way to Zapala National Route 40, Department La Rinconada, Neuquén Province, Argentina. 39° 50 ́ 54.4" S, 70° 39 ́ 52.6" W, 1071 m elevation.  
TypesHolotype:- FML 24153 (FBC 1694): C. Abdala, M. Bonino, F. Cruz, L. Moreno
Azócar , R. V. Semhan Cols. 3/XII/2009. Paratypes.— FML 24154 – 163: Same locality and data of the holotype. 
DiagnosisDiagnosis (or not): Liolaemus purul belongs to the L. melanops group. Within this group, this species differenciates from the species belonging to L. fitzingerii group because of its smaller SVL (L. purul maximum SVL 77.1 mm vs. 89–106 mm in the adult members of the L. fitzingerii group: L. canqueli, L. casamiquelai, L. chehuachekenk, L. fitzingerii, L. mel- anops, L. morenoi, L. xanthoviridis). The new species, L. purul, shows sexual dichromatism, body shape is not cylindrical (torpedo like), and it lacks the melanic antehumeral band. This new species is different from L. mapu- che and L. cuyanus, because the former species is smaller (maximum SVL in L. purul 77.1 mm vs. 83 and 102 mm in L. mapuche and L. cuyanus, respectively); it has four scales in contact with the mental scale (six in L. cuyanus and between four and six in L. mapuche).

This taxon is different from Liolaemus donosobarrosi by having different dorsally and ventrally coloration pat- terns and because the number of scales around midbody is lower in the new taxon (58–72 X = 65.6 vs. 79–95; X = 85,4 in L. donosobarrosi).
Conversely to Liolaemus goetschi, the new species has a higher number of ventral scales 96–106 (X = 101.6) vs. 79–89 (X = 74.2) in L. goetschi; it has four scales in contact with the mental scale (4–6 en L. goetschi). Liolae- mus purul does not show paravertebral spots that forms a dark colored line with a wavy shaped white spot on the posterior part of each spot that is present in L. goetschi. In this new species, males are ventrally melanic, supralabi- als alternately light and darkly colored. Flanks and sides of the head show light blue and green scales in L. purul. The new taxon is distinguishible from Liolaemus hermannunezi by having a larger body size; SVL 77.1 mm vs. 64.1 mm. in L. hermannunezi. Males in L. purul possess supralabial scales in alternated colors (light and dark). There are green and light blue scales at the sides of the head and midbody in L. purul and the melanic gular region is greater in L. purul than in L. hermannunezi. The new taxon is different from L. josei by having four scales in contact to the mental scale (4–6 in L. josei); it has noticeable scapular specs.
Among other differences, L. purul is larger than L. martorii (SVL 77.1 mm vs. 67.1 mm); the new species lacks of dark paravertebral spots, or if present the dark line is bordered in white. The new species does not have two banded-shaped spots on the gular region (present in L. martorii). Males of L. purul show a clear ventral melanism; supralabials show alternated dark and light colored scales and light blue and greenish specs on the head sides, mid- body and tail.
The differences between Liolaemus purul and L. boulengeri are: larger SVL in L. purul (77.1 mm vs. 69.0 mm), supralabials alternately dark and light colored, light blue and green scales on the sides of the head, body and tail. The predominance of ventral melanism is higher in L. purul than in L. boulengeri, and the former species never shows a reddish belly, typical of L. boulengeri.
It differs from Liolaemus inacayali by the presence of scapular spots in males, scales light blue or greenish on the sides of the head, midbody and tail, absent in L. inacayali. In addition, males of L. purul exhibit ventral mela- nism and a lower number of ventral scales, 96–106 (X = 101.6), than L. inacayali 107–118 (X = 112.6).
The differences between Liolaemus loboi and L. purul are: the presence of supralabials alternately dark and light colored, ventral melanism and light blue and green scales on the sides of the head, body and tail in the new taxon, absent in L. loboi.
Liolaemus rothi is larger than L. purul (max 92.0 mm SVL vs 77.1 mm); the new species has scapular spots and males exhibit broad and marked melanism, all these characteristics are absent in L. rothi
Liolaemus purul differs from L. sagei by its smaller SVL (max SVL 77.1 mm vs. 92.8 mm), a smaller number of ventral scales (96–106, X = 101.6, vs. 110–124, X = 118.3), and the dorsum (64–83, X = 71.6, vs. 85–98, X = 90.6) and by possessing evident scapular specs and ventral melanism.
The new species is different from Liolaemus senguer because it is larger in SVL (77.1 mm vs. 62.3 mm.), the new species has supralabials alternately dark and light colored, light blue and green scales on the sides of the head, body and tail. Additionally, L. senger shows a typical blue ventral coloration not present in L. purul.
Liolaemus purul differs from L. tehuelche because males show a broader melanic surface; flank coloration is different, red or intense yellow in L. tehuelche and light blue or greenish in L. purul. Supralabials and infralabials show differences in coloration and pattern between both species.
This new species is different from L. telsen by having a lower number of scales around the midbody (58–72; X = 65,6 vs. 74–84; X = 77,5), lower number of dorsal scales (64–83; X = 71,6 vs. 83–96; X = 88,8), larger SVL (77.1 mm vs. 68.8 mm). Liolaemus purul exhibits a more intense ventral melanism, supralabials alternately dark and light colored and light blue and green scales on the sides of the head, body and tail, all these characteristics are different in L. telsen. 
CommentSimilar species: has been confused initially with Liolaemus boulengeri and then with Liolaemus loboi. 
EtymologyThe mapuche word “purul” means “alternated black and white colors (as on a chess board)”. This color pattern is present on the supralabials and is a typical feature that distinguishes this species from the rest of the species belonging to the L. melanops group. 
  • ABDALA C. S., R. V. SEMHAN, D. L. MORENO AZOCAR, M. BONINO, M. M. PAZ & F. CRUZ 2012. Taxonomic study and morphology based phylogeny of the patagonic clade Liolaemus melanops group (Iguania: Liolaemidae), with the description of three new taxa. Zootaxa 3163: 1–32 - get paper here
  • AVILA, LUCIANO JAVIER; LORENA ELIZABETH MARTINEZ & MARIANA MORANDO 2013. Checklist of lizards and amphisbaenians of Argentina: an update. Zootaxa 3616 (3): 201–238 - get paper here
  • Grummer, J. A., Morando, M. M., Avila, L. J., Sites Jr., J. W., & Leaché, A. D. 2018. Phylogenomic evidence for a recent and rapid radiation of lizards in the Patagonian Liolaemus fitzingerii species group. Molecular Phylogenetics and Evolution - get paper here
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