''Helicops trivittatus'', the equatorial keelback, is a species of snake in the family

Colubridae Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on ever ...

. It is found in

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

References

* Helicops Snakes of Brazil Endemic reptiles of Brazil Reptiles described in 1849 Taxa named by John Edward Gray {{Dipsadinae-stub