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. Template:Doi</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
	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)
	Hydrosaurus celebensis (Peters, 1872)	Sulawesi black sailfin lizard	Indonesia (Sulawesi)
	Hydrosaurus microlophus (Bleeker, 1860)	Indonesian giant sailfin dragon, Makassar sailfin lizard, or Sulawesi giant sailfin dragon	Indonesia (Sulawesi)
	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>
	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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