Species;"Dorsal color";"Somite VII";"Somite VIII";"Annuli between gonopores";"Pharynx length";"Gastroporal duct";Epididymides;"Pre-atrial loop";"Atrial cornua" "Orobdella ibukifukuyamai sp. nov.";"reddish brown";quinquannulate;sexannulate;"1/2 + 8";"to XIV";"thick tubular";"XVI to XVIII (11–12 annuli)";absent;ovate "Orobdella okanoi";reddish;quinquannulate;sexannulate;"8 + 1/2";"to XIV";bulbous;"XV to XVII (8–11 annuli)";absent;ellipsoid "Orobdella yamaneae";purplish;quinquannulate;sexannulate;"1/2 + 7 + 1/2";"to XIV";bulbous;"XVI to XVIII (8–11 annuli)";"extending to anterior of XI c9";ovate "Orobdella dolichopharynx";"yellowish green";quadrannulate;quinquannulate;8;"to XVI";"rudimentary tubular, reaching to XVI";absent;"extending to ganglion XI";absent "Orobdella ijimai";"yellowish green";quadrannulate;sexannulate;"1/2 + 7 + 1/2";"to XIV";bulbous;"XVI to XIX (12–17 annuli)";absent;ellipsoid "Orobdella mononoke";"anterior and posterior parts grayish purple, mid-body amber";quadrannulate;sexannulate;"8 + 1/2";"to XIV";"tubular, but bulbous at junction with crop";"XV to XIX (20–22 annuli)";absent;ovate "Orobdella shimadae";"yellowish green";triannulate;quinquannulate;9;"to XVI";"rudimentary tubular, reaching to XV";absent;"extending to ganglion XI";absent "Orobdella nakahamai";purplish;quinquannulate;"dorsally septannulate, ventrally octannulate";"1/2 + 11";"to XIV";bulbous;"XV to XVII (12–13 annuli)";absent;ovate