Abstract
Abstract Two new records of the rare parasitic isopod genus Parioninella are described. Parioninella liuruiyui n. sp. represents the first record of the genus from Australia and the first bopyrid described from the porcelain crab Pachycheles pisoides (Heller, 1865). The female of the new species differs from other described species in lacking eyes, produced into pair of anterolateral flaps, the brood pouch completely covered by oostegites, while the male lacks pigmentation. Parioninella astridae Nierstrasz & Brender à Brandis, 1930 is recorded from Mindoro, Philippines, in Pachycheles sculptus (H. Milne Edwards, 1837). An identification key to the three Parioninella species is provided.
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