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Uromastyx nigriventris ROTHSCHILD & HARTERT, 1912

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Higher TaxaAgamidae (Uromastycinae), Sauria, Iguania, Squamata (lizards)
Common NamesE: Moroccan Spiny-tailed Lizard
G: Marokko-Dornschwanz 
SynonymUromastix acanthinurus nigriventris ROTHSCHILD & HARTERT 1912: 468
Uromastix acanthinurus werneri MÜLLER 1922: 201
Uromastix acanthinurus var. pluriscutata FEJÉRVÁRY 1927: 514
Uromastyx acanthinurus werneri — MERTENS 1962: 427
Uromastyx acanthinurus werneri — WERMUTH 1967: 102
Uromastix acanthinura nigriventris — WILMS 2007
Uromastix acanthinura nigriventris — WILMS et al. 2007
Uromastix acanthinura nigriventris — KOBER & GEISSEL 2007
Uromastyx nigriventris — WILMS et al. 2009
Uromastyx nigriventris — TAMAR et al. 2017 
DistributionMorocco (east and south of the Atlas Mountain Chain), W Algeria (Sahara Atlas, NW/NE/SW of the Great Western Erg).

Type locality: Tilrhempt between Laghouat and Ghardaia, Algeria.

werneri: W Algeria through Morocco. Type locality: “Provinz Oràn” (= Ain Sefra?, fide MERTENS 1962, cited in WERMUTH 1967).  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: BMNH 1969.2074, male, coll. W. Rothschild and E. Hartert, without date (for remarks see WILMS& BÖHME 2001). 
DiagnosisDifferential diagnosis: U. nigriventris is distinguished from U. thomasi and U. princeps by the longer and narrower tail (43.48–75.14 % of SVL in U. nigriventrisvs. 25.00–36.16 % in U. thomasi and 34.62–52.55 % in U. princeps); from the species of the U. ocellata group and U. macfadyeni by the arrangement of the annuli of the tail: last 8–21 forming a continuous scale row each (U. ocellata group and U. macfadyeni) vs. 2–5 whorls forming a continuous scale row in U. nigriventris; from U. aegyptia and U. occidentalis by the lower scale counts around midbody (238–322 in U. aegyptia, 297–301 in U. occi- dentalisvs. 139–208 in U. nigriventris), from U. geyri and U. alfredschmidti by the shorter tail (43.48–75.14 % of SVL in U. nigriventrisvs. 65.45–98.06 % in U. geyri and 79.31–87.26 % in U. alfredschmidti). Diagnostic characters between U. nigriventris and the subspecies of U. dispar are: lower number of scales around midbody [139–208 (mean: 170.63) in U. nigriventris vs. 187–227 (mean: 205) in U. d. dispar]; lower number of ventrals [66–99 (mean: 83.98) in U. nigriventris vs. 88–118 (mean: 104.5) in U. d. flavifasciata] and lower number of subdigital scales [9–17 (mean: 13.15) in U. nigriventris vs. 15–18 (mean: 16.4) in U. d. maliensis]. U. nigriventris is differentiated from U. acanthinura by being much more colourful, with vividly red, green and citreous coloured specimens. 
  • BOUAZZA, ABDELLAH; EL HASSAN EL MOUDEN & ABDESLAM RIHANE 2021. Checklist of amphibians and reptiles of Morocco: A taxonomic update and standard Arabic names. Herpetology Notes 14: 1-14. - get paper here
  • FEJERVARY De, G.J. 1927. On a small collection of Reptiles from Morocco. Ann. Mag. Nat. Hist. (9) 20: 512-518 - get paper here
  • Frank, M. 2012. Die Marokkkanische Dornschwanzagame, Uromastyx nigriventris. Natur und Tier Verlag, 64 pp. [review in Iguana 25 (2): 22] - get paper here
  • Kane, Daniel; Steve Goodwin, Gerrit Jan Verspui, Anniek Tump, Gabriel Martínez del Mármol Marín 2019. Reptile diversity of southern Morocco: range extensions and the role of the Djebel Ouarkziz as a biogeographical barrier. Herpetology Notes 12: 787-793 - get paper here
  • Kober, I. & Geissel, U. 2009. Terrarienbeleuchtung - Teil 1. Reptilia (Münster) 14 (75): 79-84 - get paper here
  • Kolodziej, K. & Cenker, C. 2010. Unterwegs im Schmelztiegel der Arten - Herping in Marokko. Elaphe 2020 (3): 14-25
  • Martínez del Mármol, Gabriel; D. James Harris, Philippe Geniez, Philip de Pous, and Daniele Salvi 2019. Amphibians and Reptiles of Morocco. Edition Chimaira, Frankfurt am Main, Germany, 478 pp - get paper here
  • Mediani, Mohamed; José Carlos Brito, Soumia Fahd 2015. Atlas of the amphibians and reptiles of northern Morocco: updated distribution and patterns of habitat selection. Basic and Applied Herpetology 29: - get paper here
  • Mertens,R. 1962. Bemerkungen über Uromastyx acanthinurus als Rassenkreis. Senckenbergiana biologica 43: 425-432
  • Müller, L. 1922. Über eine neue Uromastix-Art aus der Zentral-Sahara. Naturwiss. Beobachter, Frankfurt 63: 193-201
  • Pauwels, O.S.G., Bonnin, J.L., Sancho, V. & Wilms, T. 2017. Uromastyx nigriventris (Moroccan Spiny-tailed Lizard) Longevity. Herpetological Review 48 (3): 569. - get paper here
  • Rothschild, W. & Hartert, E. 1912. Ornithological explorations in Algeria. Novitates Zoologicae 18: 456-550 - get paper here
  • Safaa, B., & Mohammed, Z. 2021. Tolerance and osmotic response to food deprivation and salt loading in the herbivorous non-drinking Moroccan Spiny-tailed lizard Uromastyx nigriventris (Sauria: Agamidae). Amphibia-Reptilia 42 (4): 443–457
  • Tamar, Karin; Margarita Metallinou , Thomas Wilms , Andreas Schmitz , Pierre‐André Crochet , Philippe Geniez , Salvador Carranza 2017. Evolutionary history of spiny-tailed lizards (Agamidae: Uromastyx) from the Saharo-Arabian region. Zoologica Scripta 47: 159– 173 - get paper here
  • Trape, J.F.; Trape, S. & Chirio, L. 2012. Lézards, crocodiles et tortues d'Afrique occidentale et du Sahara. IRD Orstom, 503 pp. - get paper here
  • Wermuth, Heinz 1967. Liste der rezenten Amphibien und Reptilien. Agamidae. Das Tierreich 86: 1-127
  • Wilms, T. 2007. Dornschwanzagamen der Gattung Uromastyx - Einführung in Taxonomie und Ökologie einer auf Wüsten spezialisierten Echsengruppe. Draco 8 (31): 4-19 - get paper here
  • Wilms, T. & W. Böhme 2001. Revision der Uromastyx acanthinura - Artengruppe, mit Beschreibung einer neuen Art aus der Zentralsahara (Reptilia: Sauria: Agamidae). Zool. Abh. Staatl. Mus. Tierk. Dresden 51 (8) - get paper here
  • Wilms, T.; Strassen, B.; Oppermann, A. & Petri, C. 2007. Ein Beitrag zur artgerechten Einrichtung und Beleuchtung von Terrarien für die Haltung von Dornschwanzagamen. Draco 8 (31): 20-29 - get paper here
  • Wilms, Thomas; Böhme, Wolfgang; Wagner, Philipp; Lutzmann, Nicolà; Andreas Schmitz 2009. On the Phylogeny and Taxonomy of the Genus Uromastyx Merrem, 1820 (Reptilia: Squamata: Agamidae: Uromastycinae) – Resurrection of the Genus Saara Gray, 1845. Bonner zoologische Beiträge 56: 55-99 - get paper here
  • Zawadzki, Mike 2013. Die Überwinterung von Echsen. Draco 14 (55): 42-49 - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
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