Caelostomus montanus is a species in the ground beetle family Carabidae. It is found in Indonesia and Borneo.
Subspecies These two subspecies belong to the species Caelostomus montanus: Caelostomus montanus laevis Straneo in Louwerens, 1964 (Indonesia and Borneo) Caelostomus montanus montanus Andrewes, 1931 (Indonesia and Borneo)
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