Capillospirura Skryabin, 1924

Generic diagnosis (after Appy & Anderson 1982). Cystidicolidae . Filiform worms. Four cephalic papillae present. Mouth dorso-ventrally elongate. Pseudolabia narrow and with a ridge-like apex. Submedian labia present. Mouth opening with opposing plates projecting from antero-lateral wall of buccal cavity. Sublabium in each subdorsal and subventral quadrant of mouth opening. Buccal cavity long and slender, dilated posteriorly behind mouth opening. Ten pairs caudal papillae, four pre-cloacal and six post-cloacal. Left spicule longer than right. Vulva near midbody. Parasitic in alimentary tract of fishes, mostly sturgeons.

One species, C. pseudoargumentosa, is known from several fish species in Canada.