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Tetradactylus udzungwensis SALVIDIO, MENEGON, SINDACO & MOYER, 2004

IUCN Red List - Tetradactylus udzungwensis - Endangered, EN

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Higher TaxaGerrhosauridae (Gerrhosaurinae), Scincoidea, Sauria, Squamata (lizards)
Common NamesE: Udzungwa long-tailed seps 
SynonymTetradactylus udzungwensis SALVIDIO, MENEGON, SINDACO & MOYER 2004
Tetradactylus udzungwensis — SPAWLS et al 2018: 219 
DistributionSE Tanzania (Udzungwa Mountains)

Type locality: Bomalang’ombe grasslands at 1880 m elevation (08° 11’ 36.7’’ S, 35° 51’ 52.7’’ E), Gendawaki valley, Kilolo District, Udzungwa Mountains, South East Tanzania, collected on 7 March 2002 by M. Menegon, S. Salvidio and R. Sindaco.  
TypesHolotype: MTSN 5389, adult male 
DiagnosisDiagnosis: An elongate seps, with four small limbs, having three fingers and two toes. The median front toe bears four scales. Head with smooth scales, frontoparietals are in broad contact and nostrils pierced between two nasals; four femoral pores are present on each hind limb.
CommentMorphologically, T. udzungwensis shows similarities only with the South African

endemic T. eastwoodae Hewitt and Methuen, 1913. This species, at present considered extinct, is known only from two specimens collected from Woodbush Forest Reserve, Naphuno District, Limpopo Province by A. Eastwood in 1911 (the holotype TM 1496, conserved in Transvaal Museum, Pretoria) and by V.A. Wager in 1928 (TM 13104). However, in T. eastwoodae the two frontoparietal scales are completely separated by a very elongated interparietal in the holotype (Hewitt and Methuen, 1913; Jacobson, 1988), and are in narrow contact in the topotype TM 13104. In addition, T. eastwoodae possesses only three femoral pores and a different scalation of the middle front toe (i.e. only two scales). These differences represent diagnosticcharacters distinguishing T. eastwoodaeand T. udzungwensis (from SALVIDIO et al. 2004).

Abundance: only known from its original description (Meiri et al. 2017). 
EtymologyNamed after the type locality. 
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions - get paper here
  • Rovero, F., Menegon, M., Fjeldså, J., Collett, L., Doggart, N., Leonard, C., Norton, G., Owen, N., Perkin, A., Spitale, D., Ahrends, A., Burgess, N. D. 2014. Targeted vertebrate surveys enhance the faunal importance and improve explanatory models within the Eastern Arc Mountains of Kenya and Tanzania. Diversity and Distributions. doi: 10.1111/ddi.12246 - get paper here
  • Salvidio, S., M. Menegon, R. Sindaco and D. Moyer 2004. A new species of elongate seps from Udzungwa grasslands, southern Tanzania (Reptilia, Gerrhosauridae, Tetradactylus Merrem, 1820). Amphibia-Reptilia 25 (1): 19-27 - get paper here
  • Spawls, Steve; Kim Howell, Harald Hinkel, Michele Menegon 2018. Field Guide to East African Reptiles. Bloomsbury, 624 pp. - get paper here
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