{{Short description|Species of snake}} {{Speciesbox | image = Hypnale zara is a venomous pitviper species endemic to Sri Lanka.jpg | genus = Hypnale | status = NT | status_system = IUCN3.1 | status_ref = <ref>{{cite iucn |title= ''Hypnale zara''|url = https://www.iucnredlist.org/species/190497/1953943}}</ref> | species = zara | authority = [[John Edward Gray|Gray]], 1849 | synonyms = * ''Trigonocephalus zara'' <br><small>&ndash; [[John Edward Gray|Gray]], 1849</small> (part) * ''Hypnale zara'' <br><small>&ndash; [[Kalana Maduwage|Maduwage]] et al., 2009.</small> }}

'''''Hypnale zara''''', the '''lowlands hump-nosed pit viper''', is a [[venomous snake|venomous]] [[Crotalinae|pit viper]] [[species]] [[Endemism|endemic]] to Sri Lanka. It is distinguished from ''[[Hypnale nepa]]'' by variably colored body and less upcurved snout. No [[subspecies]] are currently recognized.<ref>{{Catalogue of Life |id=6MPSD |title=Hypnale zara (Gray, 1849) |option= |access-date=23 March 2022 }}</ref>

==Description== Hypnale zara has 10–19 minute scales extending from wart-like protuberances on the snout tip. Additionally, there are 18–39 heterogeneous small scales in the internasal to prefrontal regions, along with six scales around the eye and seven to eight supralabials. The costal scales are keeled, and there are 134–157 ventrals. Subcaudals may range from 34 to 51.<ref name=":0">{{Cite web |title=Hypnale zara (Gray, 1849) |url=https://www.gbif.org/species/7747952 |website=gbif}}</ref>

Dorsum color ranges from yellowish brown to dark brown, sometimes deep red. Two rows of distinct sub-oval or sub-triangular blotches meet in the vertebral region. There is a dark stripe across the eye and cheek. Venter is lighter than dorsum, sometimes light ash-gray.<ref name=":0" />

==Reproduction== ''Hypnale zara'' is [[ovoviviparous]].<ref>{{Cite web|url=https://reptile-database.reptarium.cz/species.php?genus=Hypnale&species=zara|title=Hypnale zara|website=The Reptile Database}}</ref>

==References== {{reflist}}

{{Taxonbar|from=Q3144228}}

[[Category:Hypnale|zara]] [[Category:Reptiles of Sri Lanka]] [[Category:Reptiles described in 1849]] [[Category:Taxa named by John Edward Gray]]

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