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Nactus arfakianus (MEYER, 1874)

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Arafak Slender-toed Gecko 
SynonymGymnodactylus (Heteronota) arfakianus MEYER 1874: 129
Nactus arfakianus — ZUG 2020: 39 
DistributionIndonesia (Schouten Islands in the mouth of Cenderawasih Bay)

Type locality: “Neu-Guinea”; subsequently, Meyer (1887) identified the locality as Doré, a town on the northeastern coast of Pulau Yapen (=Kepulauan Yapen)  
ReproductionNactus pelagicus is a composite of unisexual [parthenogenetic] and bisexual populations. Note however that Zug and Moon (1995) recognized Nactus pelagicus as the asexual species for the populations in southern Vanuatu and elsewhere in Oceania, and N. multicarinatus for the bisexual species from Vanuatu and the southern Solomon Islands. 
TypesHolotype: lost (destroyed during the Dresden firebombing in February 1945. Zug 2020 has not designated a neotype because he has not located any specimens from Doré or Yapen.
Other specimens: BPBM 3951, Biak Island; UMMZ 122449, (Numfoor Island) are from the Schouten Islands, of which Yapen is a member. 
DiagnosisAdditional details, e.g. a detailed description or comparisons (879 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy: this species has been considered as a synonym of N. pelagicus for most of recent history until it was revalidated by Zug 2020 based on 2 specimens. 
Etymology“Arfak” derives from the language of the coastal Biak people of the Vogelkop Peninsula and appears to be used for their lowland area (“inferior”) relative to the adjacent Arfak Mountains, the highest mountains on the Vogelkop. Apparently, Meyer used Arfak in a broader geographic sense to label the entire region. 
References
  • Meyer, A.B. 1874. Eine Mittheilung von Hern. Dr. Adolf Berhard Meyer über die von ihm auf Neu-Guinea und den Inseln Jobi, Mysore und Mafoor im Jahre 1873 gesammelten Amphibien. Monatsber. K. Preuss. Akad. Wiss. Berlin 1874: 128-140 [also published as a separate print with pages 1-17 with a different title in which “Hern. Dr. Adolf Berhard Meyer über die von ihm” is replaced by “mir”] - get paper here
  • Zug, George R. 2020. Diversity in Pacific Slender-Toed Geckos, Nactus pelagicus Complex (Reptilia: Squamata), of New Guinea and Adjacent Islands. Smithsonian Contributions to Zoology, (651): x + 92 pages - get paper here
 
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