What is the official phobia name for a fear of vipers?

The fear of vipers is known as "viperphobia" or "ophidiophobia," which refers to a specific fear of snakes. "Ophidiophobia" is the more general term used to describe the fear of snakes, but "viperphobia" is more specific to vipers. Vipers are a type of venomous snake, so someone with viperphobia may also have a fear of other venomous snakes as well.