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Lygodactylus neglectus CERÍACO & PASSOS, 2023

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Higher TaxaGekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)
Subspecies 
Common NamesE: Fernando de Noronha Dwarf Gecko
P: Briba de Fernando de Noronha 
SynonymLygodactylus neglectus CERÍACO & PASSOS 2023: 9 
DistributionNE Brazil (Pernambuco: Fernando de Noronha Island)

Type locality: Fernando de Noronha Island, State of Pernambuco, northeastern Brazil [-3.8690º N, -32.4249 ºE],  
Reproduction 
TypesHolotype. MNRJ 27809, adult male, Figs. 1–8), collected by John Casper Branner in 1876. Paratypes. Fifty-one specimens, of which 18 are female (MNRJ 27812, 27814, 17818, 27819, 27823, 27824, 27825, 27828, 27832. 27834, 27838, 27840, 27841, 27842, 27849, 27851, 27853, 27857) and 33 are males (MNRJ 27806, 27807, 27808, 27810, 27811, 27813, 27815, 27817, 27820, 27821, 27822, 27826. 27827, 27829, 27830, 27830, 27831, 27833, 27835, 27836, 27837, 27839, 27843, 27844, 27845, 27846, 27847, 27848, 27850, 27852, 27854, 27855, 27856). All paratypes have the same collecting data as the holotype. 
DiagnosisDiagnosis: A small sized Lygodactylus species, identified to genus by the following combination of characters: fully limbed, short and cylindrical body, short and rounded snout, small and granular dorsal scales, rudimentary inner toe, and precloacal pores present (Loveridge 1947, Pasteur 1965 [1964]). Lygodactylus neglectus sp. nov. is immediately distinguishable from the South American congener, L. klugei by a higher number of precloacal pores (7–8 in L. neglectus sp. nov. versus 3–5 in L. klugei). These pores are in an inverted V-shape row in L. neglectus sp. nov. while in L. klugei they are disposed of in an almost linear row (Fig. 2). L. klugei occurs in the Caatinga biomes in Bahia, Ceará, Piauí and Rio Grande do Norte states, while L. neglectus sp. nov. is only known from Fernando de Noronha archipelago. The new species can also be distinguished from L. wetzeli by the scalation on the top of the head. While in L. neglectus sp. nov. these scales are somewhat larger, in L. wetzeli the scales are about twice as small. This is particularly well visible on the internasals, in which in L. neglectus sp. nov. there are three internasals, while in L. wetzeli there are usually four to six (Fig. 3). The chin and gular regions of the males of L. neglectus sp. nov. are marked with a considerable number of irregular dark spots, while in L. wetzeli this coloration is not common. L. wetzeli is endemic to southwestern Brazil (Mato Grosso do Sul state), northern Paraguay and eastern Bolivia, while L. neglectus sp. nov. is only known from Fernando de Noronha archipelago. (Ceriaco & Passos 2023)


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Comment 
EtymologyNamed after Latin “neglectus”, used here as a nominative adjective, refers to the almost 150 years in which the type series of this species has been overlooked in the collections of the MNRJ. 
References
  • CERÍACO, L. M., & PASSOS, P. 2023. Historical natural history collections allow the description of a new and presumably extinct species of dwarf gecko (Squamata: Gekkonidae: Lygodactylus Gray, 1864) from Fernando de Noronha Island, Brazil. An Acad Bras Cienc, 95(3), e20230222
 
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