{{Short description|Genus of snakes}} {{Italic title}} {{Automatic taxobox | name = ''Chironius'' | image = Chironius carinatus 280429964.jpg | image_caption = ''Chironius carinatus'' | image2 = Chironius scurrulus (Yasuni).jpg | image2_caption = ''Chironius scurrulus'' | taxon = Chironius | authority = Fitzinger, 1826 | subdivision_ranks = Species | subdivision = 23, See text. }}
'''''Chironius''''' is a genus of New World colubrid snakes, commonly called '''sipos''' (from the Portuguese word ''cipó'' for liana), '''savanes''', or sometimes '''vine snakes'''. There are 23 described species in this genus.
==Species== The following 23 species are recognized as being valid.<ref>{{EMBL genus|genus=Chironius}} www.reptile-database.org.</ref> *''Chironius bicarinatus'' <small>(Wied, 1820)</small> – two-headed sipo *''Chironius brazili'' {{small|Hamdan & Fernandes, 2015}} *''Chironius carinatus'' <small>(Linnaeus, 1758)</small> – Amazon coachwhip *''Chironius challenger'' <small>Kok, 2010</small> *''Chironius diamantina'' {{small|Fernandes & Hamdan, 2014}} *''Chironius exoletus'' <small>(Linnaeus, 1758)</small> – Linnaeus's sipo *''Chironius flavolineatus'' <small>(Boettger, 1885)</small> – Boettger's sipo *''Chironius flavopictus'' {{small|(F. Werner, 1909)}} *''Chironius foveatus'' <small>Bailey, 1955</small> – South American sipo *''Chironius fuscus'' <small>(Linnaeus, 1758)</small> – brown sipo *''Chironius gouveai'' <small>Entiauspe-Neto, Lúcio-Lyra, Koch, Marques-Quintela, Diesel-Abegg & Loebmann, 2020</small> – Gouvea's sipo *''Chironius grandisquamis'' <small>(W. Peters, 1869)</small> – Ecuador sipo *''Chironius laevicollis'' <small>(Wied, 1824)</small> – Brazilian sipo *''Chironius laurenti'' <small>Dixon, Wiest & Cei, 1993</small> *''Chironius leucometapus'' {{small|Dixon, Wiest & Cei, 1993}} – yellow-headed sipo *''Chironius maculoventris'' {{small|Dixon, Wiest & Cei, 1993}} – central sipo *''Chironius monticola'' <small>Roze, 1952</small> – mountain sipo *''Chironius multiventris'' <small>Schmidt & Walker, 1943</small> – long-tailed machete savane *''Chironius quadricarinatus'' <small>(F. Boie, 1827)</small> – central sipo *''Chironius scurrulus'' <small>(Wagler, 1824)</small> – Wagler's sipo, smooth machete savane *''Chironius septentrionalis'' <small>Dixon, Wiest & Cei, 1993</small> – South American sipo *''Chironius spixii'' {{small|(Hallowell, 1845)}} *''Chironius vincenti'' <small>(Boulenger, 1891)</small> – St. Vincent blacksnake
''Nota bene'': A binomial authority in parentheses indicates that the species was originally described in a genus other than ''Chironius''.
==Conservation status== The St. Vincent Blacksnake, ''Chironius vincenti'', is listed as critically endangered by the IUCN Red List due to its extremely limited range on the Island of St. Vincent.
==References== {{Reflist}}
==Further reading== {{Commons category|Chironius}} *Fitzinger LI (1826). ''Neue Classification der Reptilien nach ihren natürlichen Verwandtschaften. Nebst einer Verwandtschafts-tafel und einem Verzeichnisse der Reptilien-Sammlung des K. K. zoologischen Museum's zu Wien''. Vienna: J.G. Heubner. five unnumbered + 67 pp. + one plate. (''Chironius'', new genus, p. 60). (in German and Latin). *Freiberg M (1982). ''Snakes of South America''. Hong Kong: T.F.H. Publications. 189 pp. {{ISBN|0-87666-912-7}}. (''Chironius'', pp. 30, 64, 92). *Torres-Carvajal O, Echevarría LY, Lobos SE, Kok PJR (2018). "Phylogeny, diversity and biogeography of Neotropical sipo snakes (Serpentes: Colubrinae: ''Chironius'')". ''Molecular Phylogenetics and Evolution'' '''130''': 315–329.
{{Taxonbar|from=Q2420137}} {{Authority control}}
Category:Chironius Category:Snake genera Category:Taxa named by Leopold Fitzinger