Platycyamus, LUTKEN, 1870

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 : 89-90

PLATYCYAMUS LÜTKEN, 1870

Diagnosis: Antenna 1, short, four-articulated, without setal arrangement on terminal article. Antenna 2 small, three-articulated. Maxilliped without palps. Gnathopod 1 palm very short, vertical, dactyli very recurved; gnathopod 2 palm short, subequal in length to gnathopod 1. Lateral gills short, subtriangular; accessory gills absent. Dactyli of Per5–Per7 very curved.

Type species: Platycyamus thompsoni (Gosse, 1855) .

Remarks: Platycyamus is recognized as a genus ectoparasitic of beaked whales; it was previously believed that only beaked whales host this genus. However, in more recent studies ziphiid whales have been shown to host Platycyamus , Isocyamus and Cyamus .

Species: Platycyamus thompsoni (Gosse, 1855) , P. flaviscutatus Waller, 1989 .