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Namibiana labialis (STERNFELD, 1908)

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Higher TaxaLeptotyphlopidae, Leptotyphlopinae, Leptotyphlopini, Typhlopoidea, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Damara Thread Snake 
SynonymGlauconia labialis STERNFELD 1908: 92
Leptotyphlops labialis — MERTENS 1955: 87
Leptotyphlops labialis — FITZSIMONS 1962
Leptotyphlops labialis — BROADLEY & BROADLEY 1999: 14
Leptotyphlops labialis — MCDIARMID, CAMPBELL & TOURÉ 1999: 34
Leptotyphlops labialis — BROADLEY & WALLACH 2007: 68
Namibiana labialis — ADALSTEINSSON, BRANCH, TRAPE, VITT & HEDGES 2009
Namibiana labialis — WALLACH et al. 2014: 473 
DistributionNW Namibia, S Angola.

Type locality: Outjo,South West Africa.  
Reproductionoviparous 
TypesHolotype: ZMB 
DiagnosisDiagnosis: Differs from other members of the group in having the supraoculars fused with the oculars and anterior supralabial with the supranasal. The posterior supralabial does not reach the level of the eye. Middorsals 278-338; subcaudals 18-24; 12 scale rows on the tail; total length/ diameter ratio 54-106; total length/ tail ratio 14.3-24.5. Snout rounded to strongly hooked. About seven dorsal scale rows light to dark brown, lighter below. (Broadley & Broadley 1999) 
Comment 
EtymologyPresumably named after the Latin labrum (lip), referring to the fused anterior supralabial with the supranasal. 
References
  • Adalsteinsson, S.A.; Branch, W.R.; Trapé, S.; Vitt, L.J. & Hedges, S.B. 2009. Molecular phylogeny, classification, and biogeography of snakes of the Family Leptotyphlopidae (Reptilia, Squamata). Zootaxa 2244: 1-50 - get paper here
  • Bauer, Aaron M.; Branch, William R. & Haacke, Wulf D. 1993. The herpetofauna of the Kamanjab area and adjacent Damaraland, Namibia. Madoqua (Windhoek) 18 (2): 117-145. - get paper here
  • Broadley, Donald G. & Broadley, Sheila 1999. A review of the Arican wormsnakes from South of Latitude 12°S (Serpentes: Leptotyphlopidae). Syntarsus 5: 1-36
  • Broadley, Donald G. & Wallach, V. 2007. A revision of the genus Leptotyphlops in northeastern Africa and southwestern Arabia (Serpentes: Leptotyphlopidae). Zootaxa 1408: 1–78 - get paper here
  • Chippaux, Jean-Philippe & Kate Jackson 2019. Snakes of Central and Western Africa. Johns Hopkins University Press, 448 pp. [detaileld review in HR 51 (1): 161] - get paper here
  • FitzSimons, V. 1962. Snakes of Southern Africa. Purnell (Cape town & Johannesburg), 423 pp.
  • Fitzsimons, V. 1966. A check-list, with syntopic keys, to the snakes of southern Africa. Annals Transvaal Museum 25 (3): 35-79 - get paper here
  • Hahn D. E. & V. WALLACH, 1998. Comments on the systematics of Old World Leptotyphlops (Serpentes: Leptotyphlopidae), with description of a new species. Hamadryad 23: 50-62 - get paper here
  • Herrmann, H.-W.; W.R. Branch 2013. Fifty years of herpetological research in the Namib Desert and Namibia with an updated and annotated species checklist. Journal of Arid Environments 93: 94–115 - get paper here
  • Marques, Mariana P.; Luis M. P. Ceríaco , David C. Blackburn , and Aaron M. Bauer 2018. Diversity and Distribution of the Amphibians and Terrestrial Reptiles of Angola -- Atlas of Historical and Bibliographic Records (1840–2017). Proc. Cal. Acad. Sci. (Ser. 4) 65: 1-501 (Supplement II)
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp.
  • Mertens,R. 1955. Die Amphibien und Reptilien Südwestafrikas. Aus den Ergebnissen einer im Jahre 1952 ausgeführten Reise. Abh. senckenb. naturf. Ges. (Frankfurt) 490: 1-172 - get paper here
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - get paper here
  • Sternfeld, R. 1908. Neue und ungenügend bekannte afrikanische Schlangen. S. Ber. Ges. naturforsch. Freunde Berlin, 4: 92-95 - get paper here
  • Sternfeld, R. 1910. Zur Schlangenfauna Deutsch-Südwestafrikas. Mehrere Fälle von Mimikry bei afrikanischen Schlangen. Mitt. zool. Mus. Berlin, 5: 51-60 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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