Talamancan palm-pitviper
Bothriechis nubestris, the Talamancan palm-pitviper, is a species of pit viper native to Costa Rica. The snake was mistaken for Bothriechis nigroviridis .
The snake is a small-medium size snake. It lives in trees and has a green-black coloration. The snake grows up to 30 inches, but many grow less than 24 inches. It is only discovered in Costa Rica. The snake kills with a toxic called nigroviriditoxin. The toxin itself was discovered in 2015.