Otilioleptidae is a monotypic harvestmen family, placed within Gonyleptoidea. It contains a single genus, Otilioleptes, and a single species, Otilioleptes marcelae . This harvestman is a troglobite, to date only found in the lava tube known as "Doña Otilia", Payunia region, Mendoza province, Argentina.[1]

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