The Gruta del Arco Freshwater Prawn, which was described in 1973, is known only from its type locality: a small freshwater lake in the Grutas del Arco in the municipality of La Trinitaria, Rancho de San Rafael del Arco, Chiapas, Mexico.

This locality is now contaminated and the species wasn’t found during recent searches, it is now probably extinct.

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edited: 13.11.2021