Table 2 in A new sexannulate species of Orobdella (Hirudinea, Arhynchobdellida, Orobdellidae) from Kii-Oshima Island, Japan

Table 2. Comparisons of morphological characters between Orobdella ibukifukuyamai sp. nov. and six sexannulate congeners plus the octannulate O. nakahamai. SpeciesDorsal colorSomite VIISomite VIIIAnnuli between gonoporesPharynx lengthGastroporal ductEpididymidesPre-atrial loopAtrial cornuaOrobdella ibukifukuyamai sp. nov.reddish brownquinquannulatesexannulate1/2 + 8to XIVthick tubularXVI to XVIII (11-12 annuli)absentovateOrobdella okanoireddishquinquannulatesexannulate8 + 1/2to XIVbulbousXV to XVII (8-11 annuli)absentellipsoidOrobdella yamaneaepurplishquinquannulatesexannulate1/2 + 7 + 1/2to XIVbulbousXVI to XVIII (8-11 annuli)extending to anterior of XI c9ovateOrobdella dolichopharynxyellowish greenquadrannulatequinquannulate8to XVIrudimentary tubular, reaching to XVIabsentextending to ganglion XIabsentOrobdella ijimaiyellowish greenquadrannulatesexannulate1/2 + 7 + 1/2to XIVbulbousXVI to XIX (12-17 annuli)absentellipsoidOrobdella mononokeanterior and posterior parts grayish purple, mid-body amberquadrannulatesexannulate8 + 1/2to XIVtubular, but bulbous at junction with cropXV to XIX (20-22 annuli)absentovateOrobdella shimadaeyellowish greentriannulatequinquannulate9to XVIrudimentary tubular, reaching to XVabsentextending to ganglion XIabsentOrobdella nakahamaipurplishquinquannulatedorsally septannulate, ventrally octannulate1/2 + 11to XIVbulbousXV to XVII (12-13 annuli)absentovate表2 新种伊吹福来山蛭（Orobdella ibukifukuyamai sp. nov.）与6种六环类同属物种及八环类中村山蛭（O. nakahamai）的形态特征比对 物种、背体色、第Ⅶ体节环式、第Ⅷ体节环式、生殖孔间环纹数、咽延伸位置、生殖孔管、附睾、心房前袢、心房角 伊吹福来山蛭（Orobdella ibukifukuyamai sp. nov.）、红棕色、五环式、六环式、1/2 + 8、延伸至第ⅩⅣ体节、厚管状、ⅩⅥ至ⅩⅧ体节（11~12环）、缺失、卵形 冈野山蛭（Orobdella okanoi）、红褐色、五环式、六环式、8 + 1/2、延伸至第ⅩⅣ体节、球状、ⅩⅤ至ⅩⅦ体节（8~11环）、缺失、椭圆形 山形山蛭（Orobdella yamaneae）、紫色、五环式、六环式、1/2 + 7 + 1/2、延伸至第ⅩⅣ体节、球状、ⅩⅥ至ⅩⅧ体节（8~11环）、延伸至第Ⅺ体节前缘、约9、卵形 长咽山蛭（Orobdella dolichopharynxy）、黄绿色、四环式、五环式、8、延伸至第ⅩⅥ体节、退化管状，延伸至第ⅩⅥ体节、缺失、延伸至第Ⅺ神经节、缺失 今井山蛭（Orobdella ijimai）、黄绿色、四环式、六环式、1/2 + 7 + 1/2、延伸至第ⅩⅣ体节、球状、ⅩⅥ至ⅩⅨ体节（12~17环）、缺失、椭圆形 物怪山蛭（Orobdella mononoke）、前后段灰紫色，中段琥珀色、四环式、六环式、8 + 1/2、延伸至第ⅩⅣ体节、管状，与嗉囊连接处球状、ⅩⅤ至ⅩⅨ体节（20~22环）、缺失、卵形 岛田山蛭（Orobdella shimadae）、黄绿色、三环式、五环式、9、延伸至第ⅩⅥ体节、退化管状，延伸至第ⅩⅤ体节、缺失、延伸至第Ⅺ神经节、缺失 中村山蛭（Orobdella nakahamai）、紫色、五环式、背侧七环式、腹侧八环式、1/2 + 11、延伸至第ⅩⅣ体节、球状、ⅩⅤ至ⅩⅦ体节（12~13环）、缺失、卵形