;"C. cavernosa";"C. coreana";"C. danielopoli";"C. reddelli";"C. subterranea";"C. wardi";"C. hokkaiensis sp. nov." "Shape of valves";elongate;elongate;triangular;elongate;elongate;elongate;elongate "Surface of valves";"with numerous shallow pits, most distinct towards anterior and posterior margins, less distinct in central area";"with very finely pitted";"with elongate shallow pits in central area, and with much smaller rounded pits in posterior region";"with small shallow pits";"with small shallow pits in a central transverse band; pits may be reduced or even absent";smooth;smooth "Number of An1 podomeres";7;6;7;7;7;7;7 "Number of setae on 1st podomere of Mx-palp";"not described";"5 distal and 1 subdistal";"5 distal";"5 distal";"5 distal and 1 subdistal";"4 distal and 1 subdistal";"5 distal and 1 subdistal" "Seta b on L5";absent;present;absent;absent;present;present;absent "Seta d on L5";absent;absent;absent;present;present;present;absent "Number of rays comprising vibratory plate on L5";2;4;1;4;2;3;0 Reference;"Smith (2011)";"McKenzie (1972); Marmonier et al. (1989)";"Smith et al. (2017)";"Külköylüoğlu (2020)";"Wolf (1920); Marmonier et al. (1989)";"Marmonier et al. (1989)";"this study"