Alcalus
Alcalus is a small group of frogs in the family Ceratobatrachidae. It is the only member of the subfamily Alcalinae. Its sister taxon is Ceratobatrachinae. That means that the frogs are related to each other. In English, some people call them Alcala's dwarf mountain frogs. They live in Palawan Island (the Philippines), Borneo, and the Malay Peninsula. They prefer semi-aquatic microhabitats.