Abstract: | Three species of pseudionine bopyrid isopods infesting four species of munidid squat lobsters are reported from Philippine waters: Pleurocryptella laevis (Richardson, 1910 Richardson, H. 1910. Marine isopods collected in the Philippines by the U. S. Fisheries steamer Albatross in 1907–8. Bureau of Fisheries Document., 736: 1–44. Google Scholar]) from Agononida analoga (Macpherson, 1993); Aporobopyrus retrorsa (Richardson, 1910 Richardson, H. 1910. Marine isopods collected in the Philippines by the U. S. Fisheries steamer Albatross in 1907–8. Bureau of Fisheries Document., 736: 1–44. Google Scholar]) from Munida philippinensis Macpherson and Baba, 1993 and Munida kuboi Yanagita, 1943; and Munidion laterale Richardson, 1910 Richardson, H. 1910. Marine isopods collected in the Philippines by the U. S. Fisheries steamer Albatross in 1907–8. Bureau of Fisheries Document., 736: 1–44. Google Scholar] from Paramunida scabra (Henderson, 1885). All of these hosts, except for Paramunida scabra, are recorded for the first time bearing parasitic isopods. |