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Ishikawatrechus intermedius

Ishikawatrechus intermedius is a blind cave beetle first found in the cave Ôchi-dô, Kôchi Prefecture, Japan. Cave species can become adapted to life in a cave and lose the ability to travel outside the cave. When this happens, mating with other populations ceases and the isolated species form new species, each one restricted to its own cave. Ishikawatrechus intermedius was found in a cave that became the site for extensive limestone mining during the 1970s….

Source: Living With Insects Blog