Hemirrhagus akheronteus is a tarantula which is part of the Hemirrhagus genus. It is found in Mexico, in the state of Queretaro, and is one of many Mexican cave tarantulas. It was first described by Mendoza and Francke in 2018. It is named after the latin word akheronteus, which means "pertaining to the stream of woe", referring to the acheron river in the infernal regions of Greek mythology.

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