Hydrosaurus

Hydrosaurus, commonly known as the sailfin dragons or sailfin lizards, is a genus in the family Agamidae.<ref name=ReptileDatabase>Hydrosaurus, The Reptile Database</ref> These relatively large lizards are named after the sail-like structure on their tails. They are native to Indonesia (four species) and the Philippines (one species), where they are generally found near water, such as rivers and mangrove swamps.<ref name=Siler2014>Cameron D. Siler, Andrés Lira-Noriega, Rafe M. Brown (2014). Conservation genetics of Australasian sailfin lizards: Flagship species threatened by coastal development and insufficient protected area coverage. Biological Conservation 169: 100–108. {{#invoke:doi|main}}</ref> Sailfin lizards are semiaquatic and able to run short distances across water using both their feet and tail for support, similar to the basilisks.<ref>Jackman Bauer (2008). Global diversity of lizards in freshwater (Reptilia: Lacertilia). Hydrobiologia 595(1): 581–586.</ref> They are threatened by both habitat loss and overcollection for the wild-animal trade.<ref name=Siler2014/>

In the 19th century, the genus was called Lophura, but in 1903, Poche pointed out that the name was preoccupied by a genus of pheasants.<ref name="Denzer2020" /> Since Günther in 1873, the Sulawesi populations were considered to belong to H. amboinensis; Denzer et al. in 2020 resurrected H. celebensis and H. microlophus, increasing the number of species from three to five.<ref name="Denzer2020" />

They are the only members of the subfamily Hydrosaurinae.

Species

Currently, five species are valid according to the Reptile Database,<ref name=ReptileDatabase/><ref name=Siler2014/><ref name=Denzer2020>Template:Cite journal</ref>

Image	Scientific name	Common name	Distribution
File:Hydrosaurus amboinensis, male, Air besar (Passo), Ambon.png	Hydrosaurus amboinensis (Schlosser, 1768)	Moluccan sailfin lizard or Amboina sail-finned lizard, soa-soa water lizard	Western New Guinea, Ambon/Amboina Island and Ceram Island (Indonesia)
File:Hydrosaurus celebensis, male, Pattunuang, Sulawesi.png	Hydrosaurus celebensis (Peters, 1872)	Sulawesi black sailfin lizard	Indonesia (Sulawesi)
File:Hydrosaurus microlophus, male, Rompegading, Sulawesi.png	Hydrosaurus microlophus (Bleeker, 1860)	Indonesian giant sailfin dragon, Makassar sailfin lizard, or Sulawesi giant sailfin dragon	Indonesia (Sulawesi)
File:Hydrosaurus pustulatus -London Zoo, England-8a.jpg	Hydrosaurus pustulatus (Eschsholtz, 1829)	Philippine sailfin lizard, layagan, balubid, or ibid<ref name="pp">Template:Cite news</ref><ref>Hydrosaurus pustulatus, IUCN</ref>	Philippine archipelago (except Palawan)<ref name="Siler">Template:Cite journal</ref>
File:Jielbeaumadier hydrosaure weberi 1 mjp paris 2013.jpeg	Hydrosaurus weberi Barbour, 1911	Weber's sailfin lizard	Ternate Island, North Maluku (Indonesia) Halmahera Island, North Maluku (Indonesia)

References

• Template:Wikispecies-inline
• Template:Commons category-inline
• Hydrosaurus, ZipCodeZoo.com

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