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Reginald B. Cocroft, Keith Hambler, Observations on a Commensal Relationship of the Microhylid Frog Chiasmocleis ventrimaculata and the Burrowing Theraphosid Spider Xenesthis immanis in Southeastern Peru, Biotropica, Vol. 21, No. 1 (Mar., 1989), pp. 2-8
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Cocroft et al. (1989) studied this question.
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