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Cyrtodactylus rosichonarieforum RIYANTO, GRISMER & WOOD, 2015

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesEnglish: Rosichonariefi’s Bent-toed Gecko
Indonesian: Cicak Kecil Rosichonariefi 
SynonymCyrtodactylus rosichonariefi RIYANTO, GRISMER & WOOD 2015
Cyrtodactylus rosichonarieforum — AMARASINGHE et al. 2020 (nom. emend.) 
DistributionIndonesia (Great Natuna: Bunguran Island)

Type locality: Sekunyam Forest, Bunguran Selatan Subdistrict, Natuna District, Kepulauan Riau Province, Bunguran Island (Great Natuna), Indonesia (3°40’29.4” N; 108°09’16.0” E; elevation 80 m.  
TypesHolotype: MZB Lace.12132, an adult male, collected on 15 August 2013 at 20h25 by A. Riyanto and Zamri. Paratype. MZB.Lace.12133, subadult male, Sekunyam Forest, Bunguran Selatan Subdistrict, Natuna District, Kepulauan Riau Province, Bunguran Island , Indonesia (03°40’30.1” N; 108°09’21.1” E; elevation 80 m), collected on 16 April 2014 at 19h30 by A. Riyanto and L.L. Grismer. 
DiagnosisDiagnosis. SVL of only known adult male 54.6 mm; body relatively robust; limbs and digits short, relatively slender; 19 irregularly aligned rows of strongly keeled dorsal tubercles; 34 paravertebral tubercles; 46 ventral scales between ventrolateral folds; no precloacal groove; no precloacal pores; six slightly enlarged rows of femoral scales on the anterior portion of the thighs meet abruptly with postfemoral scales; enlarged precloacal scales; 12 or 13 subdigital lamellae on the first toe; 18 or 19 subdigital lamellae on the fourth toe; no enlarged subcaudal scales; reddish brown iris.

Species comparisons. Cyrtodactylus rosichonariefi sp. nov. is distinguished from all congeners of the C. semenanjungensis species complex (Grismer et al. 2014b) of Peninsular Malaysia and Singapore except C. majulah, C. pantiensis Grismer, Chan, Grismer, Wood & Belabut, C. metropolis Grismer, Wood, Chan, Anuar & Muin, and C. payacola Johnson, Quah, Shahrul, Muin, Wood, Grismer, Greer, Chan, Ahmad, Bauer & Grismer, by having a reddish iris, absence of reticulated pattern on head, lack femoral pores and lack of enlarged median subcaudal. As enumerated in Table 2, C. rosichonarief can be readily differentiated from C. majulah, C. metropolis, C. pantiensis and C. payacola by absence both of precloacal pores and tubercles on the forearm. It is differs from C. majulah by absence of enlarged precloacal scales, fewer dorsal tubercles (19 versus 22), fewer paravertebral tubercles (34 versus 39–46) and fewer subdigital lamellae on the fourth toe (18–19 versus 20–23). It is further differentiated from C. metropolis by the absence of enlarged precloacal scales, fewer dorsal tubercles (16 versus 22), fewer subdigital lamellae on the fourth toe (18–19 versus 20–21) and by having a blotched as opposed to a banded dorsal pattern. The new species can differentiated from C. pantiensis by fewer dorsal tubercles (19 versus 22) and subdigital lamellae on fourth toe (18–19 versus 22–23). It can be differentiated from C. payacola by absence of enlarged precloacal scales, fewer dorsal tubercles (19 versus 21) and fewer paravervetebral tubercles (34 versus 37–39). These character states are scored across all species of the swamp-dwelling clade in Table 2 (RIYANTO et al. 2015). 
CommentAbundance: only known from its original description (Meiri et al. 2017). 
EtymologyEtymology. The specific epithet rosichonariefi combines the names of two Indonesian scientists. We would like to recognize the contributions made by Rosichon Ubaidillah, an entomologist and director of the Museum Zoologicum Bogoriense (MZB), and Ahmad Jauhar Arief, a former director of MZB. Both gentlemen are very supportive and provide opportunities and facilities for young researchers at the MZB to develop their skills. We fell that naming a species after them is a much-deserved honor.
Note that the species was named after two men, hence the epithet “rosichonariefi” used by Riyanto et al. (2015a), is improperly constructed and, and the correct epithet would be “rosichonarieforum”, according to Amarasinghe et al. 2020: 66. 
  • Amarasinghe, A. A.; Awal Riyanto, Mumpuni & Lee L. Grismer 2020. A NEW BENT-TOED GECKO SPECIES OF THE GENUS Cyrtodactylus GRAY, 1827 (SQUAMATA: GEKKONIDAE) FROM THE WEST BALI NATIONAL PARK, BALI, INDONESIA. TAPROBANICA 9 (1): 59–70, pls. 22–24. - get paper here
  • Grismer, L. L., Wood, P. L., Poyarkov, N. A., Le, M. D., Kraus, F., Agarwal, I., ... & Grismer, J. L. 2021. Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71: 101–154 - get paper here
  • 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
  • RIYANTO, AWAL; L. LEE GRISMER & PERRY L. WOOD, JR. 2015. Cyrtodactylus rosichonariefi sp. nov. (Squamata: Gekkonidae), a new swamp-dwelling bent-toed gecko from Bunguran Island (Great Natuna), Indonesia. Zootaxa 3964 (1): 114–124 [erratum in Zootaxa 3999 (4): 600] - get paper here
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