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Hemidactylus inexpectatus CARRANZA & ARNOLD, 2012

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos) 
Subspecies 
Common Names 
SynonymHemidactylus inexpectatus CARRANZA & ARNOLD 2012: 59 
DistributionOman (Gulf of Masirah, West of Barr al Hikman, Hammar-an-Nafur island)

Type locality: 2.5 km Southeast of Ar Rumayliyah, 20.3319’N 57.78989’E, elevation 65 m. 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.
 
Reproduction 
TypesHolotype: BMNH 2008.711, male, collected on the 29th of October 2008 by S. Carranza, E.N. Arnold and S. Alrabiei (MorphoBank M100257–M100280). Paratypes: BMNH2008.712, male, same collecting data as Holotype (MorphoBank M100233–M100256); IBES1798, male, same collecting data as Holotype (MorphoBank M100281–M100301); IBES7722, male from the same locality as the Holotype, collected on the 11th of October 2010 by S. Carranza and F. Amat (MorphoBank M100302–M100310); IBES7700, female, same collecting data as IBES7722 (MorphoBank M100311–M100315); IBES7735, female, same collecting data as IBES7722 (MorphoBank M100316–M100320); ONHM3711, female, same collecting data as IBES7722 (MorphoBank M100321–M100328). 
CommentMorphoBank M100233–M100346

Diagnosis A small, slender, depressed Hemidactylus growing up to 44.1 mm SVL. Low conical or weakly keeled tubercles on back and neck, arranged in 14 regular rows at mid-body, largest on lateral dorsum compared with mid- back and flank; larger tubercles present on hind limbs and tail; adhesive pads narrow, lamellae under the 1st toe of pes 6, lamellae under toe 4th toe mean 10.5 (10–11); preanal pores 4; expanded subcaudal scales extend to about 2–4 whorls from tail base. Dorsum with a pattern of irregular dark spots and streaks; tail with 8–9 dark bands that increase in intensity distally contrasting with pale interstices, the final 5–6 extending to the ventral surface.
Hemidactylus inexpectatus differs from H. homoeolepis by its larger adult size (SVL mean 37.5 mm, max. 44.1 mm, compared with mean 31.8 mm, max. 39.7 mm), presence of conical or weakly keeled and extensive tubercles on the body, nape hind legs and tail (generally absence of tubercles in H. homoeolepis), lower number of preanal pores in males (4 compared with mean 5.5, 3–6), higher number of lamellae under the 1st toe of pes (6 compared with mean 4.7, 4–5), and under the 4th toe of pes (mean 10.5, 10–11, compared with mean 8.4, 7–11). Distinguished from H. paucituberculatus by its larger adult size (SVL mean 37.5 mm, max. 44.1 mm, compared with mean 32.2 mm, max. 38.4 mm), larger conical or weakly keeled and more extensive tubercles on the body, nape, hind legs and tail, lower number of preanal pores in males (4 compared with 6), higher number of lamellae under the 1st toe of pes (6 compared with mean 4.9, 4–5), and under the 4th toe of pes (mean 10.5, 10–11, compared with mean 8.3, 7–9). Distinguished from H. masirahensis by having a less depressed head and body, larger conical or weakly keeled and more extensive tubercles on the body, nape, hind legs and tail, different coloring (dark bands of the tail less conspicuous and marked in H. inexpectatus, especially on adults and in the underside of the tail). 
EtymologyEtymology The species epithet “inexpectatus” refers to the unexpected finding of this distinct new species of Hemidactylus in this area of Central Oman. 
References
  • Carranza, S., Arnold, E. Nicholas 2012. A review of the geckos of the genus Hemidactylus (Squamata: Gekkonidae) from Oman based on morphology, mitochondrial and nuclear data, with descriptions of eight new species. Zootaxa 3378: 1–95 - get paper here
  • Rösler, Herbert 2015. Bemerkungen über einige Geckos der Zoologischen Staatssammlung München. Gekkota, Suppl. (2): 3-54
  • Šmíd, Jiří; Salvador Carranza, Lukáš Kratochvíl, Václav Gvoždík, Abdul Karim Nasher, Jiří Moravec 2013. Out of Arabia: A Complex Biogeographic History of Multiple Vicariance and Dispersal Events in the Gecko Genus Hemidactylus (Reptilia: Gekkonidae). PLoS ONE 8(5): e64018 - get paper here
 
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