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Uromastyx geyri MÜLLER, 1922

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Higher TaxaAgamidae (Uromastycinae), Sauria, Iguania, Squamata (lizards) 
Common NamesE: Geyr’s Spiny-tailed Lizard, Sahara Mastigure
G: Geyrs Dornschwanzagame 
SynonymUromastyx temporalis VALENCIENNES 1854 (?)
Uromastix geyri MÜLLER 1922: 193
Uromastyx acanthinurus geyri — MERTENS 1962: 430
Uromastyx acanthinurus geyri — WERMUTH 1967: 101
Uromastyx (acanthinura) geyri — SCHLEICH, KÄSTLE & KABISCH 1996: 310
Uromastyx geyri — WILMS & BÖHME 2001
Uromastyx geyri — WILMS et al. 2009 
DistributionSouth Algeria, Mali and Niger (Air and Hoggar Mountain area).

Type locality: entre Aquebly et Djebbel-Hoggar, Sahara. Lectotype: Gara Djenoum, Ahaggar Mts. Algeria, S Algeria. Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
TypesNeotype: ZFMK 9230 (designated by MÜLLER 1951) 
CommentStatus of Uromastyx temporalis unclear.

Differential diagnosis: U. geyri is distinguished from U. thomasi and U. princepsby the longer and narrower tail (65.45–98.06 % of SVLin U. geyri vs. 25.00–36.16 % in U. thomasiand 34.62–52.55 % in U. princeps); from the species of the U. ocellata group and U. macfadyeniby the arrangement of the annuli of the tail: last 8–21 forming a continuous scale row each (U. ocellatagroup and U. macfadyeni) vs. 2–5 whorls forming a continuous scale row in U. geyri; from U. aegyptiaand U. occidentalisby the lower scale counts around midbody (238–322 in U. aegyptia, 297–301in U. occidentalis vs. 142–196 in U. geyri), from U. acanthinura, U. nigriventrisand U. dispar by its longer tail (65.45–98.06 % of SVLin U. geyri vs. 50.27–74.42 in U. acanthinura, 47.83–70 % in U. disparand 43.48–75.14 % in U. nigriventris). From U. alfredschmidtiit is distinguished by differences in the scalation of the flanks (enlarged triangular and imbricate scales in U. alfredschmidti vs. enlarged tubercular scales in U. geyri), as well as the complete black colouration of adult males in U. alfredschmidti. 
Etymologynamed after ornithologist H. Geyr von Schweppenburg who brought the first specimens of this species to Europe. 
  • Bell, T. 1825. Description of a new species of Lizard. Zoological Journal. London 1: 457-460 - get paper here
  • Böhme, Wolfgang 2012. About the Collection of and the Research on Agamid Lizards at the Zoologisches Forschungsmuseum Alexander Koenig (ZFMK) in Bonn, Germany. Russ. J. Herpetol. 19 (2): 101-107 - get paper here
  • Boulenger, G.A. 1885. Catalogue of the Lizards in the British Museum (Nat. Hist.) I. Geckonidae, Eublepharidae, Uroplatidae, Pygopodidae, Agamidae. London: 450 pp. - get paper here
  • Flower,Stanley 1933. Notes on the recent reptiles and amphibians of Egypt, with a list of the species recorded from that kingdom. Proc. Zool. Soc. London 1933: 735-851
  • Gray, J.E. 1825. A synopsis of the genera of reptiles and Amphibia, with a description of some new species. Annals of Philosophy, 10:193—217 - get paper here
  • Hartert, E. 1913. Reptiles and batrachians. Expeditions to entral Western Sahara by E. Hartert. Novit. Zool., London 20: 76-84
  • Heyden, C. H. G. von. 1827. Reptilien. In Rüppell, E. Atlas zu Reise im nördlichen Afrika. l. Zoologie. H. L. Brönner, Frankfurt a. M., pp. 1-24 - get paper here
  • Löhr, B . 2004. Die Geyrs Dornschwanzagame,Uromastyx geyri. Natur und Tier Verlag (Münster), 64 pp. - get paper here
  • Macey, J. R., J. A. Schulte II, A. Larson, N. B. Ananjeva, Y. Wang, R. Pethiyagoda, N. Rastegar-Pouyani, T. J. Papenfuss 2000. Evaluating trans-Tethys migration: an example using acrodont lizard phylogenetics. Systematic Biology 49 (2): 233-256 - get paper here
  • Manthey,U. & SCHUSTER,N. 1999. Agamen, 2. Aufl. Natur und Tier Verlag (Münster), 120 pp. - get paper here
  • Mateo, J.A., GENIEZ, P., LOPEZ-JURADO, L. F., BONS, J. 1999. Chorological analysis and morphological variations of Saurians of the genus Uromastyx (Reptilia: Agamidae) in western Sahara. Description of two new taxa. Revista Española de Herpetologia 12: 97-109
  • Mertens,R. 1962. Bemerkungen über Uromastyx acanthinurus als Rassenkreis. Senckenbergiana biologica 43: 425-432
  • Mudde, P. & Hofstra, G. 2008. Nieuwe Uromastyx soorten in de hobby. Lacerta 65 (6): 254-262 [2007] - get paper here
  • Müller, L. 1922. Über eine neue Uromastix-Art aus der Zentral-Sahara. Naturwiss. Beobachter, Frankfurt 63: 193-201
  • Rothschild & Hartert 1912. Ornithological explorations in Algeria. Novit. Zool., London 18: 456- - get paper here
  • Schleich,H.H., Kästle,W., Kabisch, K. 1996. Amphibians and Reptiles of North Africa. Koeltz, Koenigstein, 627 pp.
  • Sindaco, R. & Jeremcenko, V.K. 2008. The reptiles of the Western Palearctic. Edizioni Belvedere, Latina (Italy), 579 pp. - 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
  • Valenciennes, A. 1854. Compte Rendu des Séances de l’Académie des Sciences, Paris 39: 89
  • Wilms, T. 2001. Dornschwanzagamen, 2. Aufl. Herpeton, Offenbach, 142 pp. - get paper here
  • 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.; Ruf, D. & Löhr, B. 2003. Zur Haltung und Nachzucht zweier Taxa aus dem Uromastyx-acanthinura-Komplex: Uromastyx geyri MÜLLER 1922 und Uromastyx dispar flavifasciata MERTENS 1962 (Reptilia: Agamidae: Leiolepidinae: Uromastyx). Draco 4 (14): 42-55 - 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
  • Wilms,T. 1995. Dornschwanzagamen. MÜNSTER: 130 (ISBN 3-9802892-5-7) - get paper here
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