TABLE 1 in A new species of Eutyphoeus earthworm (Clitellata: Acanthodrilidae) from Mizoram, North-East India

TABLE 1: Comparison of Eutyphoeus rihnimensis sp. nov. with congener species
CharactersE. gigasE. sereiE. plenusE. rihnimensis sp. nov.Length (mm)120-290170-180210-335105-149Diameter (mm)7-115.6-67-105.5-8.5Segment155-212130-150Not available117-198Small, transverseOne paired onSpermathecal poresSpermathecal poresslits, slightly lateralintersegmental regionin bd.paired, small transverseSpermathecal poreto b, sometimes7/8, transverse slits orslits, slightly lateral to bextending into ab.small oval papillae atsetal line, on segment 7/8ab or lateral to b.Posterior retracticleSlit-like apertureTransverse fissuresC-shaped conspicuousflap-like lobes ofon protruded darkcentrally locatedstructures with penesMale poreannular penes.coloured porophores on segment 17.about at b in a porophore smallerprojecting into 4 lobes (2 anterior and 2 posterior).than genitalmarkings.Male funnelsAbsent.Absent.Present in x.AbsentPaired, post-setal orPaired, post-setal on 7Paired in ac, in twopaired, post-setal onpre-setal on somepost-setal, 8 presetalor more of 14-16,segment 16 and18 at absegments 8-16, 18-at a, 8 post-setal at ab,19-21Genital markings20, at aa or ab or bc,16 post-setal lateralunpaired, medianto b.on some of 11/12-15/16,18/19-21/22.Genital marking glandsPresent, sessileAbsentAbsentAbsentBidiverticulate,Bidiverticulate,Bidiverticulate,Bidiverticulate, kidney-Spermathecaemedian and lateral, stalked entalmultilobulated, ectal diverticula, ampullamedian and lateral.shaped ampulla, very short median and lateraldiverticula.cylindrical, duct shortental diverticula.Ornamented withOrnamented, tipTip widened andPenial setae ornamentednumerous, short,spooned shaped withflattened, ornamentedwith closely spacedcrowded, transversepointed tips.with fined,irregular rows of 5 or 7Penial setaerows of spine-likethorn-like spinesgroups of spines, reducedteeth, tip pointed toclosely crowdedin number towards thea spine.or in irregularlypointed and curved tipinterrupted circles.Digitiform, ventrallyPaired, conical shape,Usually in 28, butPaired, tubular, directedLateral intestinal caecadirected in 28.ventrally directed inoccasionally in 27upwards in 28.28.or 29.Median ventralMedian ventralVentral caeca 40-44,Ventral caeca10, small,Ventral intestinal caecaintestinal caeca 24- 29 in 32-61.intestinal caeca unpaired, 5-6 in 31-in 34-79.unpaired, in mid-ventral line in 33-43±1.63.