Diplodactylidae

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Diplodactylidae
Temporal range: paleocene - Recent
Eastern Stone Gecko (Diplodactylus vittatus) (9107575734).jpg
Diplodactylus vittatus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Superfamily: Pygopodoidea
Family: Diplodactylidae
Underwood, 1954[1]
Genera

25, see text

The Diplodactylidae are a family in the suborder Gekkota (geckos), with over 150 species in 25 genera.[2] These geckos occur in Australia, New Zealand, and New Caledonia.[3][4] Diplodactylids are the most ecologically diverse and widespread family of geckos in both Australia and New Caledonia, and are the only family of geckos found in New Zealand.[5][6] Three diplodactylid genera (Oedura, Rhacodactylus, and Hoplodactylus) have recently been split into multiple new genera. [7][8][9]

In previous classifications, the family Diplodactylidae is equivalent to the subfamily Diplodactylinae.[10]

Habitat[edit]

Like other geckos, Diplodactylidae often live in warm areas that are around the temperature of 24–29 °C (75–85 °F). They mostly live in rain forests, up in the trees for protection. However, they are also found in cooler climates such as those found in southern New Zealand, where they have been found to be active in temperatures ranging from 1.4 to 31.9C.[11]

Reproduction[edit]

Viviparity is notable as a trait unique to diplodactylids within Gekkota, with two species in New Caledonia from the genus Rhacodactylus and all species in New Zealand exhibiting this form of reproduction.[12]

Common traits[edit]

Adhesion ability[edit]

All species possess some form of toepad, except Lucasium damaeum which shows strong evidence of toepads being secondarily lost.[3][13]

With the help of their adhesion ability they have on their feet, they are able to grip on to surfaces, making it easier for them to travel from one place to another.

Based on a study, geckos like to grip onto coarse sandpaper-like surfaces because this material is similar to the type of surfaces they grip on to in their natural habitats. It was concluded that Diplodactylidae like to grip on to rough surfaces. [14]

Classification[edit]

While diplodactylid geckos have been relatively well-studied, the family’s placement and composition has experienced several revisions, with the systematics continuing to evolve.[9][15] Recent molecular work has helped to clarify phylogeny that was historically based primarily on morphological traits, justifying the monophyly of Diplodactylidae, revising intergeneric relationships between several genera, and uncovering significant cryptic diversity within the family.[16][17][3][18][19][20][21][22][23] However, the current understanding of the systematics and evolution of diplodactylid geckos remains limited, with certain genera and taxa still largely unstudied and significant underestimates in diversity at the species level left to resolve.[19][6]

Placement within Gekkota[edit]

Underwood completed the first comprehensive systematics analysis of geckos in 1954,[1] using morphological features like pupil shape and inferences around biogeography to establish three major families within Gekkota (or Gekkonoidea as it was also known): the Eublepharidae, the Sphaerodactylidae, and the Gekkonidae.[1][22][24] He designated Gekkoninae and Diplodactylinae as subfamilies within Gekkonidae. Underwood’s Diplodactylinae comprised 22 genera from Australian regions and South Africa, including many of the diplodactylid and carphodactylid species known at the time.[22] Kluge disputed Underwood’s classification, instead recognizing a single family, Gekkonidae (later equivalent to Gekkota) with four subfamilies that included the Eublepharinae, Sphaerodactylinae, Gekkoninae and Diplodactylinae.[13] He subdivided Diplodactylinae into two tribes, Diplodactylini with four genera, and Carphodactylini with nine.[13] As Kluge believed pupil shape alone to be too variable a diagnostic character, his classification was based on 18 morphological characters, as well as geologic and geographical origins.[13] This necessitated the reallocation of several Diplodactylinae genera (e.g., those from South Africa, those with “non-parchment-like” shelled eggs) to the Gekkoninae.[24][22]

In subsequent years, Kluge’s classifications of genera, which built off Underwood’s original groupings, were generally accepted. However, Kluge’s subfamilial allocations—including his subdivision of Diplodactylinae—and his apparent assumptions around their respective monophyly proved problematic for some (e.g., Moffatt 1973, Hecht 1976), who suggested alternative or expanded hypotheses.[22] Kluge's 1987 publication continued to build on his earlier work by examining the relationship of the limbless Pygopodidae to the Gekkonidae.[25] He used a simple phylogenetic analysis of synapomorphies to place the pygopods within Gekkonidae as sisters to the Diplodactylinae, and delineated this clade as Pygopodoidea.[25][22] This grouping also made more sense biogeographically, as Kluge modified his earlier assumptions of gekkotan origins from fixed continents, landbridges, and oceanic dispersal, to lie more in line with the emerging plate-tectonics Gondwanan hypothesis.[26][13][22] While these revisions helped advance systematics closer to the contemporary understanding of Diplodactylidae, inconsistencies around how Carphodactylini were then defined and how they fit within the Australia-New Zealand vicariance left questions that required more sophisticated genetic analyses to answer.[26][17][3][25]

Many early assumptions of diplodactylid systematics have either been supported or invalidated with the improvement of phylogenetic analyses and more comprehensive sampling. Nuclear loci in particular have been helpful for resolving intergeneric relationships and origin questions. C-mos loci and 12S rRNA gene sequences to construct a molecular phylogeny helped to confirm the pygopods’ placement as a monophyletic sister lineage to the Diplodactylinae.[17] These results also corroborated that both the Diplodactylinae and its Diplodactylini subdivision were monophyletic, although monophyly of the Carphodactylini was not supported.[24][3][17] In the first gecko-wide genetic analysis by Han et al. (2004), c-mos loci again helped clarify placement within the Pygopodoidea.[3] Results showed evidence of paraphyly for Kluge’s Diplodactylinae with Diplodactylini genera and padded carphodactylines instead supported as the sister group to pygopods and padless carphodactylines, which was upheld in later analyses.[27][6] These new pairings led Han et al. (2004) to reorder membership within the Diplodactylini and Carphodactylini and to propose a new taxonomy of geckos at the family level to reflect their findings.[3] The five new families proposed were the limbless Pygopodidae; Carphodactylidae, which included only padless Carphodactylini; Diplodactylidae, which now included all Kluge’s Diplodactylini together with all pad-bearing Carphodactylini; Eublepharidae; and Gekkonidae.[24][3] This was a significant revision to Kluge’s proposed order, and, excepting minor movement of genera and more extensive movement at the species level, is generally representative of the modern monophyletic Diplodactylidae.

Genera[edit]

List of genera
Genus Image Type species Taxon author Common name Species
Amalosia Amalosia jacovae 108361244.jpg
A. jacovae
A. lesueruii (Duméril & Bibron, 1836) Wells & Wellington, 1984 Velvet geckos 4
Bavayia Bavayia septuiclavis 33483122.jpg
B. septuiclavis
B. cyclura (Günther, 1872) Roux, 1913 Bavayias 12
Correlophus Crested gecko juvenile.jpg
C. ciliatus
C. ciliatus Guichenot, 1866 Guichenot, 1866 Crested geckos 3
Crenadactylus Fingals gecko.jpg
C. ocellatus
C. ocellatus (Gray, 1845) Dixon & Kluge, 1964 Clawless geckos 7
Dactylocnemis Dactylocnemis pacificus 31204729.jpg
D. pacificus
D. pacificus (Gray, 1842) Steindachner, 1867 Pacific gecko 1+
Dierogekko Dierogekko nehoueensis 33597271.jpg
'D. nehoueensis
D. validiclavis (Sadlier, 1988) Bauer, Jackman, Sadlier, & A. Whitaker, 2006 Striped geckos 9
Diplodactylus Eastern Stone Gecko (Diplodactylus vittatus) (9107575734).jpg
D. vittatus
D. vittatus Gray, 1832 Gray, 1832 Stone geckos and fat-tailed geckos 27
Eurydactylodes Eurydactylodes vieillardi.JPG
E. vieillardi
E. vieillardi (Bavay, 1869) Wermuth, 1965 Chameleon geckos 4
Hesperoedura H. reticulata (Bustard, 1969) Oliver, Bauer, Greenbaum, Jackman & Hobbie, 2012 Reticulated velvet gecko 1
Hoplodactylus Duvaucel's gecko.JPG
H. duvaucelii
H. duvaucelii (Duméril & Bibron, 1836) Fitzinger, 1843 New Zealand giant geckos 2+
Lucasium Lucasium stenodactylum 127849788.jpg
L. stenodactylum
L. damaeum (Lucas & Frost, 1896) Wermuth, 1965 Ground geckos 14
Mniarogekko Rhacodactylus chahoua.jpg
M. chahoua
M. chahoua (Bavay, 1869) Bauer, Whitaker, Sadlier & Jackman, 2012 Mossy geckos 2
Mokopirirakau Mokopirirakau cryptozoicus by Rod Morris.jpg
M. cryptozoicus
M. granulatus (Gray, 1845) Nielsen, Bauer, Jackman, Hitchmough & Daugherty, 2011 New Zealand geckos 5+
Naultinus Wellington Green Naultinus.jpg
N. punctatus
N. elegans (Gray, 1842) Gray, 1842 Green geckos 9
Nebulifera Nebulifera robusta 105073546.jpg
N. robusta
N. robusta (Boulenger, 1885) Oliver, Bauer, Greenbaum, Jackman & Hobbie, 2012 Robust velvet gecko 1
Oedodera O. marmorata Bauer, Jackman, Sadlier, & Whitaker, 2006 Bauer, Jackman, Sadlier, & Whitaker, 2006 Marbled gecko 1
Oedura Oedura cincta 124560262.jpg
O. cincta
O. marmorata Gray, 1842 Gray, 1842 Velvet geckos 19
Paniegekko P. madjo (Bauer, Jones, & Sadlier, 2000) Bauer, Jackman, Sadlier, & Whitaker, 2000 1
Pseudothecadactylus Pseudothecadactylus lindneri 4.jpg
P. lindneri
P. australis (Günther, 1877) Brongersma, 1936 3
Rhacodactylus Diplodactylidae - Rhacodactylus leachianus.JPG
R. leachianus
R. leachianus (Cuvier, 1829) Fitzinger, 1843 Giant Geckos 4
Rhynchoedura Rhynchoedura ormsbyi 99939471.jpg
R. ormsbyi
R. ornata Günther, 1867 Günther, 1867 Beaked Geckos 6
Strophurus Golden Tailed Gecko.jpg
R. taenicauda
S. strophurus (Duméril & Bibron, 1836) Fitzinger, 1843 Spiny-tailed geckos 20
Toropuku Stephensislandgecko.jpg
T. stephensi
T. stephensi (Robb, 1980) Nielsen, Bauer, Jackman, Hitchmough & Daugherty, 2011 Striped geckos 2
Tukutuku Hoplodactylus rakiurae-2.jpg
T. rakiurae
T. rakiurae (Thomas, 1981) Nielsen, Bauer, Jackman, Hitchmough & Daugherty, 2011 Harlequin gecko 1
Woodworthia Woodworthia brunnea 1325590.jpg
W. brunnea
W. maculata (Gray, 1845) Garman, 1901 New Zealand geckos 3+

Intergeneric systematics[edit]

The Australian endemic diplodactylids excepting Pseudothecadactylus, the New Caledonia diplodactylids together with the Australian Pseudothecadactylus, and the New Zealand endemics comprise the three well-supported clades within current-day Diplodactylidae.[7][15] Due to their closer divergence, the New Zealand and Australian endemics (without Pseudothecadactylus) form a sister clade, while the New Caledonian diplodactylids show evidence of their more recent and rapid radiation in short branch lengths.[7][15][6] Because the quick succession of genera can complicate phylogenetic reconstruction, it may remain difficult to produce well-supported intergeneric relationships for the eight New Caledonian diplodactylids in spite of a growing number of studies investigating them.[28][15][6][7] New Zealand genera have proved somewhat easier to analyze. The group has correspondingly gone through several taxonomic revisions to reach the current order of genera proposed by Nielson et al. in 2011.[29][7] Yet, a high amount of cryptic diversity remains unresolved, especially within Hoplodactylus.[29] Australia genera such as Diplodactylus, Lucasium, Rhynchoedura and Strophurus are generally considered well-studied, with many of their intergeneric relationships strongly supported and resolved.[27][20][8] The Pseudothecadactylus affinity to New Caledonian geckos has been informative and is under study,[27][7] while Oedura are being increasingly examined.[21][27][8][6] However, more work is still needed to understand the basal relationships and divergence of other “non-core” genera like Nebulifera, Amalosia, Hespeodura and Crenadactylus.[6]

Multiple studies in all three endemic clades of the Diplodactylidae have suggested and confirmed that high cryptic diversity exists at the species level.[21][20][19][18][7][28] Because undescribed diversity can have serious implications for not only evolutionary and ecological understanding, but also for effective conservation of the family, this is an issue to be resolved within the Diplodactylidae phylogeny. Endemic Gondwanan lineages, a diversity of habitats, and the relative isolation of the three Australian regions have allowed for a significant speciation of diplodactylids. In 2009 an additional 16 Diplodactylus species within the Australian radiation were described,[19] while evidence of deep divergence within Crenadactylus revised the single nominal species Crenadactylus ocellatus into 10 distinct lineages in 2010.[18] Likewise 16 new species in New Zealand were recognized in 2011.[7] In 2014 another seven genetically distinct and morphologically diagnosable taxa were described in Australia,[20] and two years later four additional species were added to Oedura.[21] In 2020 four new species were reported in New Caledonia.[28] Just within the past decade, diversity records within Diplodactylidae have increased substantially, from 54 species[19] to almost 140 species.[2] This is due in large part to improvement in taxon sampling and molecular analyses, as well as the growing recognition of the cryptic diversity that still exists within the family.

The following cladogram represents the structure of Diplodactylidae in a phylogenetic analysis by Skipwith et al., 2019.[6]

Diplodactylidae 

Pseudothecadactylus

New Caledonian geckos

Eurydactylodes

Oedodera

Dierogekko

Correlophus

Rhacodactylus (paraphyletic)

Mniarogekko

Paniegekko

Bavayia

Crenadactylus

New Zealand geckos

Woodworthia (paraphyletic)

Hoplodactylus

Tukutuku

Dactylocnemis

Mokopirirakau

Toropuku

Naultinus

Hesperoedura

Amalosia (paraphyletic)

Nebulifera

Oedura

Strophurus

Rhynchoedura

Lucasium

Diplodactylus

Origins[edit]

Although origins of the Diplodactylidae have long been debated,[3][25][13][7] the Gondwanan vicariance hypothesis has generally supplanted most arguments for dispersal across land-bridges or by sea. The first gecko-wide genetic analysis found support for a split of Eastern Gondwanaland from Western Gondwanaland and evidence that Eastern Gondwanan lineages of Diplodactylidae, Pygopodidae and Carphodactylidae appear older than lineages in the Gekkonidae.[3] These findings have been upheld and clarified in subsequent dating analyses. Most molecular divergence studies agree that diplodactylids were likely present prior to the final breakup of Australia and Antarctica[27][20] with diversification of crown diplodactyloids occurring between the late Cretaceous or the earliest Paleogene periods.[30][15][27][18][29][7] A recent phylogenomic analysis suggests independent colonization events to New Zealand and New Caledonia after the K-T extinction in the late Paleogene and early Neogene, respectively.[6] Due to the range of these dispersals, and fossil evidence showing that New Zealand was likely submerged during the Oligocene as was New Caledonia during the Paleocene, it has been suggested that both the New Zealand and New Caledonian colonizations may have been a result of over-water dispersal events after all.[15][6][7]

Conservation[edit]

Of the approximately 149 species currently described, 30 are listed as Critically Endangered or Endangered, and 28 as Near Threatened or Vulnerable. Another three are listed as data deficient [as of October 2021].[31]

References[edit]

  1. ^ a b c Underwood, Garth (1954). "On the classification and evolution of geckos". Proceedings of the Zoological Society of London. 124 (3): 469–492. doi:10.1111/j.1469-7998.1954.tb07789.x.
  2. ^ a b Diplodactylidae at the Reptarium.cz Reptile Database. Accessed 19 April 2021.
  3. ^ a b c d e f g h i j Han, Demin; Zhou, Kaiya; Bauer, Aaron M. (2004). "Phylogenetic relationships among gekkotan lizards inferred from C-mos nuclear DNA sequences and a new classification of the Gekkota". Biological Journal of the Linnean Society. 83 (3): 353–368. doi:10.1111/j.1095-8312.2004.00393.x.
  4. ^ Gamble, Tony; Greenbaum, Eli; Jackman, Todd R.; Russell, Anthony P.; Bauer, Aaron M. (2012). "Repeated origin and loss of adhesive toepads in geckos". PLOS ONE. 7 (6): e39429. Bibcode:2012PLoSO...739429G. doi:10.1371/journal.pone.0039429. PMC 3384654. PMID 22761794.
  5. ^ Gamble, Tony; Greenbaum, Eli; Jackman, Todd R.; Bauer, Aaron M. (2015-04-09). "Into the light: diurnality has evolved multiple times in geckos". Biological Journal of the Linnean Society. 115 (4): 896–910. doi:10.1111/bij.12536.
  6. ^ a b c d e f g h i j Skipwith, Phillip L.; Bi, Ke; Oliver, Paul M. (2019-11-01). "Relicts and radiations: Phylogenomics of an Australasian lizard clade with east Gondwanan origins (Gekkota: Diplodactyloidea)". Molecular Phylogenetics and Evolution. 140: 106589. doi:10.1016/j.ympev.2019.106589. PMID 31425788.
  7. ^ a b c d e f g h i j k Nielsen, Stuart V.; Bauer, Aaron M.; Jackman, Todd R.; Hitchmough, Rod A.; Daugherty, Charles H. (2011-04-01). "New Zealand geckos (Diplodactylidae): Cryptic diversity in a post-Gondwanan lineage with trans-Tasman affinities". Molecular Phylogenetics and Evolution. 59 (1): 1–22. doi:10.1016/j.ympev.2010.12.007. PMID 21184833.
  8. ^ a b c Oliver, Paul M.; Bauer, Aaron M.; Greenbaum, Eli; Jackman, Todd; Hobbie, Tara (2012). "Molecular phylogenetics of the arboreal Australian gecko genus Oedura Gray 1842 (Gekkota: Diplodactylidae): Another plesiomorphic grade?". Molecular Phylogenetics and Evolution. 63 (2): 255–264. doi:10.1016/j.ympev.2011.12.013. PMID 22209860.
  9. ^ a b Bauer, Aaron M.; Jackman, Todd R.; Sadlier, Ross A.; Whitaker, Anthony H. (2012-07-31). "Revision of the giant geckos of New Caledonia (Reptilia: Diplodactylidae: Rhacodactylus )". Zootaxa. 3404 (1): 1–52. doi:10.11646/zootaxa.3404.1.1.
  10. ^ Goin CJ, Goin OB, Zug GR. 1978. Introduction to Herpetology, Third Edition. San Francisco: W.H. Freeman and Company. xi + 378 pp. ISBN 0-7167-0020-4. ("Subfamily Diplodactylinae", p. 284).
  11. ^ Chukwuka, C. O. (2020). Microhabitat use by the nocturnal, cool-climate gecko Woodworthia ‘Otago/Southland’ in the context of global climate change (Thesis, Doctor of Philosophy). University of Otago. Retrieved from http://hdl.handle.net/10523/10412
  12. ^ Pianka, Eric R. (2003). Lizards : windows to the evolution of diversity. Laurie J. Vitt. Berkeley: University of California Press. ISBN 0-520-23401-4. OCLC 47791058.
  13. ^ a b c d e f Kluge, Arnold G. (1967). "Higher taxonomic categories of gekkonid lizards and their evolution". Bulletin of the American Museum of Natural History. 135: 1–60. hdl:2246/1985.
  14. ^ Pillai, Rishab; Nordberg, Eric; Riedel, Jendrian; Schwarzkopf, Lin (2020-10-16). "Geckos cling best to, and prefer to use, rough surfaces". Frontiers in Zoology. 17 (1): 32. doi:10.1186/s12983-020-00374-w. PMC 7566132. PMID 33088332.
  15. ^ a b c d e f Skipwith, Phillip L.; Bauer, Aaron M.; Jackman, Todd R.; Sadlier, Ross A. (2016). "Old but not ancient: coalescent species tree of New Caledonian geckos reveals recent post-inundation diversification". Journal of Biogeography. 43 (6): 1266–1276. doi:10.1111/jbi.12719.
  16. ^ Bauer, Aaron M.; Jackman, Todd R.; Sadlier, Ross A.; Shea, Glenn; Whitaker, Anthony H. (April 2008). "A new small-bodied species of Bavayia (Reptilia: Squamata: Diplodactylidae) from southeastern New Caledonia". Pacific Science. 62 (2): 247–256. doi:10.2984/1534-6188(2008)62[247:ANSSOB]2.0.CO;2. hdl:10125/22696.
  17. ^ a b c d Donnellan, Stephen C.; Hutchinson, Mark N.; Saint, Kathleen M. (May 1999). "Molecular evidence for the phylogeny of Australian gekkonoid lizards". Biological Journal of the Linnean Society. 67 (1): 97–118. doi:10.1111/j.1095-8312.1999.tb01932.x.
  18. ^ a b c d Oliver, Paul M.; Adams, Mark; Doughty, Paul (2010-12-15). "Molecular evidence for ten species and Oligo-Miocene vicariance within a nominal Australian gecko species (Crenadactylus ocellatus, Diplodactylidae)". BMC Evolutionary Biology. 10 (1): 386. doi:10.1186/1471-2148-10-386. PMC 3018458. PMID 21156080.
  19. ^ a b c d e Oliver, Paul M.; Adams, Mark; Lee, Michael S.Y.; Hutchinson, Mark N.; Doughty, Paul (2009-06-07). "Cryptic diversity in vertebrates: molecular data double estimates of species diversity in a radiation of Australian lizards (Diplodactylus, Gekkota)". Proceedings of the Royal Society B: Biological Sciences. 276 (1664): 2001–2007. doi:10.1098/rspb.2008.1881. PMC 2677245. PMID 19324781.
  20. ^ a b c d e Oliver, Paul M.; Laver, Rebecca J.; Smith, Katie L.; Bauer, Aaron M. (2014-05-14). "Long-term persistence and vicariance within the Australian Monsoonal Tropics: the case of the giant cave and tree geckos (Pseudothecadactylus)". Australian Journal of Zoology. 61 (6): 462–468. doi:10.1071/ZO13080. S2CID 84359153.
  21. ^ a b c d Oliver, Paul M.; Doughty, Paul (2016-03-08). "Systematic revision of the marbled velvet geckos (Oedura marmorata species complex, Diplodactylidae) from the Australian arid and semi-arid zones". Zootaxa. 4088 (2): 151–176. doi:10.11646/zootaxa.4088.2.1. PMID 27394333.
  22. ^ a b c d e f g Russell, Anthony P.; Bauer, Aaron M. (November 2002). "Underwood's classification of the geckos: a 21st century appreciation". Bulletin of the Natural History Museum, Zoology Series. 68 (2). doi:10.1017/S0968047002000134.
  23. ^ Vanderduys, Eric; Hoskin, Conrad J.; Kutt, Alex S.; Wright, Justin M.; Zozaya, Stephen M. (2020-11-10). "Beauty in the eye of the beholder: a new species of gecko (Diplodactylidae: Lucasium) from inland north Queensland, Australia". Zootaxa. 4877 (2): 291–310. doi:10.11646/zootaxa.4877.2.4. PMID 33311190.
  24. ^ a b c d Bauer, A M (2019-04-30). "Gecko Adhesion in Space and Time: A Phylogenetic Perspective on the Scansorial Success Story". Integrative and Comparative Biology. 59 (1): 117–130. doi:10.1093/icb/icz020. PMID 30938766.
  25. ^ a b c d Kluge, Arnold G. (1987). "Cladistic relationships in the Gekkonoidea (Squamata, Sauria)". Miscellaneous Publications. Museum of Zoology, University of Michigan. 173: 1–54. hdl:2027.42/56417. Retrieved 2021-04-20.
  26. ^ a b Bauer, Aaron M. (1990). Phylogenetic systematics and biogeography of the Carphodactylini (Reptilia:Gekkonidae). Bonn: Zoologisches Forschungsinstitut und Museum Alexander Koenig. ISBN 3-925382-31-3. OCLC 22725734.
  27. ^ a b c d e f Oliver, Paul M.; Sanders, Kate L. (2009). "Molecular evidence for Gondwanan origins of multiple lineages within a diverse Australasian gecko radiation". Journal of Biogeography. 36 (11): 2044–2055. doi:10.1111/j.1365-2699.2009.02149.x.
  28. ^ a b c Hudel, Lennart (2020-03-17). "New distribution records: Four species of giant geckos (Gekkota: Diplodactylidae) occur in syntopy on Île des Pins, New Caledonia". Herpetology Notes. 13: 261–265.
  29. ^ a b c Nielsen, Stuart V.; Oliver, Paul M.; Laver, Rebecca J.; Bauer, Aaron M.; Noonan, Brice P. (September 2016). "Stripes, jewels and spines: further investigations into the evolution of defensive strategies in a chemically defended gecko radiation (Strophurus, Diplodactylidae)". Zoologica Scripta. 45 (5): 481–493. doi:10.1111/zsc.12181. S2CID 89325880.
  30. ^ Doughty, Paul; Ellis, Ryan J.; Oliver, Paul M. (2016-09-15). "Many things come in small packages: Revision of the clawless geckos (Crenadactylus: Diplodactylidae) of Australia". Zootaxa. 4168 (2): 239–278. doi:10.11646/zootaxa.4168.2.2. PMID 27701335.
  31. ^ "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species.

Data related to Diplodactylidae at Wikispecies

Further reading[edit]

  • Underwood G. 1954. On the classification and evolution of geckos. Proc. Zool. Soc. London 124 (3): 469–492. (Diplodactylidae, new family).