Pardo, Boyko & Mantelatto 2009. Description of a new species of Asymmetrione (Isopoda: Bopyridae: Pseudioninae) infesting the hermit crab Paguristes tomentosus (Anomura: Diogenidae) from Peru, with a key to species and a review of southeastern Pacific bopyrids. Journal of Natural History, 43(33-34) 2009: 2041-2055