Cyamus, LATREILLE, 1796

Iwasa-Arai, Tammy & Serejo, Cristiana Silveira, 2018, Phylogenetic analysis of the family Cyamidae (Crustacea: Amphipoda): a review based on morphological characters, Zoological Journal of the Linnean Society 184, pp. 66-94 : 91

CYAMUS LATREILLE, 1796

Diagnosis: Antenna 1 usually long, with four articles. Incisor of left mandible usually with five teeth; lower lip partly fused. Pereonites 3 and 4 wider or subequal in width to pereonite 5 in males and wider in females. Pereonite 4 of male with a posterolateral knoblike process. Accessory gills of female usually present, oval.

Type species: Cyamus ceti (Linnaeus, 1758) . Remarks: Most species of Cyamus are host specific, and some whales can host more than one Cyamus species. It is the largest genus and is the most studied, owing to commercial whaling of and large amounts of parasites on slow-moving cetaceans.

Species: Cyamus ceti (Linnaeus, 1758) , C. boopis L ü t k e n, 1 8 7 0, C. c a t o d o n t i s M a r g o l i s, 1 9 5 4, C. erraticus Roussel de Vauzème, 1834 , C. eschrichtii Margolis , McDonald & Boulsfield, 2000, C. gracilis Roussel de Vauzème, 1834 , C. kessleri A Brandt, 1873 , C. mesorubraedon Margolis , McDonald & Boulsfield, 2000, C. monodontis Lütken, 1870 , C. nodosus Lütken, 1860 , C. ovalis Roussel de Vauzème, 1834 and C. scammoni Dall, 1872 .