Micro-endemic and vicariant populations of Opisthacanthus Peters, 1861 (Scorpiones: Hormuridae) in Madagascar, with descriptions of two new species

摘要

Two new scorpion species, Opisthacanthus antsiranana sp.n. and O. ambanja sp.n., are described from the North of Madagascar. The new species clearly suggest cases of micro-endemic and vicariant populations within the island. The total number of species of the genus in Madagascar is now elevated to 10 and its known geographical distribution within the island is expanded.