Harrison R. Steeves, III, Evolutionary Aspects of the Troglobitic Asellids of the United States: The Hobbsi, Stygius and Cannulus Groups, The American Midland Naturalist, Vol. 75, No. 2 (Apr., 1966), pp. 392-403
No takes yet. Share an insight, caveat, or question.
Harrison R. Steeves (1966) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: