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