Synophis

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Dipsadidae
Subfamilia: Xenodontinae
Genus: Synophis
Species (9): S. bicolor – S. bogerti – S. calamitus – S. insulomontanus – S. lasallei – S. niceforomariae – S. plectovertebralis – S. zaheri – S. zamora
Name

Synophis Peracca, 1896: 1

Type species: Synophis bicolor Peracca, 1896, by monotypy.
References
Primary references

Peracca, M.G. 1896. Nuovo genere di colubride aglifo dell’America meridionale (In Italian). Bolletino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino 11(266): 1–2. BHL Reference page.

Additional references

Pyron, R.A., Guayasimin, J.M., Peñafiel, N., Bustamente, L. & Arteaga, A. 2015. Systematics of Nothopsini (Serpentes, Dipsadidae), with a new species of Synophis from the Pacific Andean slopes of southwestern Ecuador. ZooKeys 541: 109–147. DOI: 10.3897/zookeys.541.6058 Reference page.
Pyron, R.A., Arteaga, A., Echevarría, L.Y. & Torres-Carvajal, O. 2016. A revision and key for the tribe Diaphorolepidini (Serpentes: Dipsadidae) and checklist for the genus Synophis. Zootaxa 4171(2): 293–320. DOI: 10.11646/zootaxa.4171.2.4. Reference page.
Torres-Carvajal, O., Echevarría, L., Venegas, P.J., Chávez, G. & Camper, J. 2015. Description and phylogeny of three new species of Synophis (Colubridae, Dipsadinae) from the tropical Andes in Ecuador and Peru. ZooKeys 546: 153–179. DOI: 10.3897/zookeys.546.6533 Full article Reference page.

Vernacular names
English: Fishing Snakes

Synophis is a genus of snakes in the family Colubridae. The genus is endemic to northwestern South America.

Description

Snakes of the genus Synophis have unusual scalation on the top of the head. The internasal scales are very small, and the prefrontal scales are fused into one large plate.[1]
Species

The genus Synophis contains the following nine species which are recognized as being valid.[2]

Synophis bicolor Peracca, 1896
Synophis bogerti Torres-Carvajal, Echevarría, Venegas, Chávez & Camper, 2015
Synophis calamitus Hillis, 1990
Synophis insulomontanus Torres-Carvajal, Echevarría, Venegas, Chávez & Camper, 2015
Synophis lasallei (Nicéforo-María, 1950)
Synophis niceforomariae Pyron, Arteaga, Echevarría, & Torres-Carvajal, 2016
Synophis plectovertebralis Sheil & T. Grant, 2001
Synophis zaheri Pyron, Guayasamin, Peñafiel, Bustamante & Arteaga, 2015
Synophis zamora Torres-Carvajal, Echevarría, Venegas, Chávez & Camper, 2015

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Synophis.
References

Peracca (1896).

Genus Synophis at The Reptile Database.