Oncojapyx is a genus of diplurans in the family Japygidae.Sandra, Alberto, ed. Japygidae Species Listing. Biology Catalog. Texas A&M University, 2006. Retrieved on July 28, 2010.

Species Oncojapyx basilewskyi Pagés, 1952 Oncojapyx machadoi Silvestri, 1948 Oncojapyx peramatus Pagés, 1952

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