TABLE 2 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

TABLE 2. Analytical comparison of morphological characters among Nipponasellus species.
CharactersSpecieN. aioiiN. hubrichtiN. kagaensisN. takefuensisN. tonensisN. sudzukhensisN. matsumotoi(Chappuis,(Matsumoto,(Matsumoto,(Matsumoto,(Matsumoto,spec. nov.spec. nov.1955)1956)1958)1961)1961)Body shapebroadmoderatelybroadmoderatelybroadmoderatelyvermiformbroadbroadbroadBody, sidessubparallelsubparallelsubparallelsubparallelnot parallelsubparallelsubparallelto each otherHead shapebroadera littlebroader thanbroader thanbroader thanas long as broadlonger thanthan longlonger thanlonglonglongbroadbroadHead, post-indistinctindistinctunknowndistinctdistinctdistinctdistinctmandibularlobesAntennula5 articles6 articles8 articles8 articles8 articles6 articles6 articles(males),flagellumwithAntennaca. 73%ca. 68-80%ca. 70%ca. 100%ca. 80%ca. 60%ca. 60%(males) /body lengthratioAntenna28-2921-3038-4352 articles44 articles29 articles30 articles(males),articlesarticlesarticlesflagellumwithMandible,reducedreducedreducedreducedreducednormalnormalpalpGenitalunknownsubmediallyunknownunknownunknownsub-laterallysub-laterallypapilla sitingAppendixunknownunknownunknownunknownunknownprimitivespecializedmasculina(SEM)Uropodshortershorter thanshorter thanas long asshorter thanshorter thanlonger thanlengththanpleotelsonpleotelsonpleotelsonpleotelsonpleotelsonpleotelsonpleotelsonSexualboth sexesboth sexesmales largermales largerunknownfemales largermales largerdimorphismof similarof similarthan femalesthan femalesthan malesthan femaleslengthlengthBody length,up to 9.0up to 6.3up to 7.8up to 10.1up to 11.1up to 6.0up to 5.0mm