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Citation: Midtgaard, Rune. RepFocus - A Survey of the Reptiles of the World. (www.repfocus.dk).
Latest update: December 31st, 2022.

Taxonomy of the family Viperidae
Bibliography of the genus Ophryacus
Biodiversity of the family Viperidae


Mexican Horned Pitvipers

Mexikanische Horn-Lanzenottern

Mexicanske Hornlanseslanger

1887 Ophryacus Cope (type species: Trigonocephalus undulatus Jan 1859)
Contents: 3 species, all of which are endemic.
Endemism: 0% 100%
Remarks: Formerly included in Bothrops and Porthidium. Revalidated by Burger (1971) in an unpublished dissertation, which was followed by Campbell & Lamar (1989). Previously included Mixcoatlus melanurus.
Distribution: Mexico (Guerrero, Hidalgo, Oaxaca, Puebla, Veracruz).

Ophryacus smaragdinus

Emerald Horned Pitviper



2015 Ophryacus smaragdinus Grünwald, Jones, Franz-Chávez & Ahumada-Carrillo

Distribution: Mexico (Hidalgo, Oaxaca, Puebla, Veracruz).

Ophryacus sphenophrys

Broad-horned Pitviper

Südliche Horn-Lanzenotter

Sydlig Hornlanseslange

1960 Bothrops sphenophrys Smith "1959"
Ophryacus sphenophrys Grünwald, Jones, Franz-Chávez & Ahumada-Carrillo 2015

Remarks: Previously regraded as a synonym of undulatus (e.g., Burger 1971; Campbell & Lamar 1989). Revalidated by Grünwald, Jones, Franz-Chávez & Ahumada-Carrillo (2015).
Distribution: Mexico (Oaxaca).

Ophryacus undulatus

Slender-horned Pitviper, Eyelash Mountain Viper, Undulated Pitviper



1859 Trigonocephalus undulatus Jan
Atropos undulatus Jan 1863
Teleuraspis undulatus Garman 1884
Ophryacus undulatus Ferrari-Perez 1886
Bothrops undulatus Günther 1895
Lachesis undulatus Boulenger 1896
Trimeresurus undulatus Mocquard 1909
Bothriechis undulatus Julia-Zertuche & Varela 1978

Remarks: Previously included sphenophrys and the populations now assigned to smaragdinus (Grünwald, Jones, Franz-Chávez & Ahumada-Carrillo 2015).
Distribution: Mexico (Guerrero, Oaxaca, Puebla, Veracruz).