Guide to the Parasites of Fishes of Canada Part V: Nematoda Author Arai, Hisao P. Author Smith, John W. text Zootaxa 2016 4185 1 1 274 journal article 10.11646/zootaxa.4185.1.1 11620862-ddcf-4c01-b0d9-32867e03d74b 1175-5326 165530 0D054EDD-9CDC-4D16-A8B2-F1EBBDAD6E09 Spinitectus Fourment, 1883 Generic diagnosis (after Moravec 2013). Cystidicolidae . Medium-sized worms with short unspined “head” region. Cuticle behind “head” with numerous transverse rings, each provided with row of posteriorly directed cuticular spines diminishing posteriorly. Pseudolabia broad, flat. Mouth opening elongated dorso-ventrally. Buccal cavity sclerotized, cylindrical, usually with dilated anterior part forming prostom. Oesophagus divided into muscular and glandular portions. Males with caudal alae, supported by three to six pairs pre-cloacal pedunculate papillae, and an area rugosa . Gubernaculum absent. Vulva in posterior half of body. Uterus amphidelphic. Eggs elliptical, larvated, mature ones with or without filaments or polar caps. Parasites of alimentary tract of fresh-water and marine fishes, and amphibians. Type species S. oviflagellis Fourment, 1883 .