Character;"Dorsal colour";"Somite VII";"Somite VIII";"Annuli between gonopores";Pharynx;"Gastroporal duct";Epididymides;"Pre-atrial loop";"Atrial cornua" "Orobdella okanoi sp. n.";reddish;quinquannulate;sexannulate;"8 + 1/2";"reaching to XIV";bulbous;"XV to XVII";absent;ellipsoid "Orobdella yamaneae sp. n.";purplish;quinquannulate;sexannulate;"1/2 + 7 + 1/2";"reaching to XIV";bulbous;"XVI to XVIII";"extending to anterior of XI c9";ovate "Orobdella dolichopharynx";"yellowish green";quadrannulate;quinquannulate;8;"reaching to XVI";"tubular, reaching to XVI";absent;"extending to ganglion XI";absent "Orobdella ijimai";"yellowish green";quadrannulate;sexannulate;"1/2 + 7 + 1/2";"reaching to XIV";bulbous;"XVI to XIX";absent;ellipsoid "Orobdella mononoke";"anterior and posterior parts grayish purple, mid-body amber";quadrannulate;sexannulate;"8 + 1/2";"reaching to XIV";"tubular, but bulbous at junction with crop";"XV to XIX";absent;ovate "Orobdella shimadae";"yellowish green";triannulate;quinquannulate;9;"reaching to XVI";"tubular, reaching to XV";absent;"extending to ganglion XI";absent