Plectrohyla
Spikethumb frogs (Plectrohyla) are a genus (group of species) of frogs in the family Hylidae. They live in Central America. They live as far north as southern Mexico through Guatemala and northern El Salvador to central and northern Honduras. The last time scientists reexamined the family Hylidae, they moved 21 species into this genus from Hyla. They are called spikethumb because of the spike on their thumbs. The spike is called a prepollex. The name "Plectrohyla" comes from the Greek word plēktron, which means "spur,"  and hyla, the name of the group in which many of its frogs used to be.