Revision of the Family Gilquiniidae Dollfus (Cestoda, Trypanorhyncha) From Elasmobranch Fishes

Abstract

The trypanorhynch cestode family Gilquiniidae Dollfus, 1942 is revised. The existing genera Gilquinia Guiart, 1927 and Aporhynchus Nybelin, 1918 are redescribed, and two new genera, Plesiorhynchus, gen. nov., and Deanicola, gen. nov., are added. Gilquinia squali (Fabricius, 1794) is redescribed, and G. robertsoni, sp. nov., and G. stevensi, sp. nov., are added. G. nannocephala (Pintner, 1930) is unrecognisable from the description and the only extant types are in a macerated condition, preventing redescription. Plesiorhynchus etmopteri, sp. nov., and P. campbelli, sp. nov., differ from related genera in having an elongate pars post-bulbosa. Deanicola protentus, sp. nov., and D. minor, sp. nov., differ from related genera in having a prominently craspedote scolex. Aporhynchus norvegicus (Olsson, 1868) is redescribed, and A. tasmaniensis, sp nov., added.