Table 1 in Description of Elthusa aquabio sp. n. (Crustacea: Isopoda: Cymothoidae), a branchial fish parasitic isopod from Indian waters

Table 1. Inter-specific characters of Elthusa aquabio sp. n., Elthusa fistularia, E. pseudorhombus, and E. uranoscopus, described from Indian waters.
E. uranoscopusE. pseudorhombusE. fistularia Aneesh,Aneesh, Helna,Aneesh, Helna, KumarHelna, Kumar andKumar and Trilles,CharacterE. aquabio sp. n.and Trilles, 2020Trilles, 20202020Cephalon1.20 times wider than1.7 times wider than1.2 times wider than1.6 times wider thanlonglonglonglongCoxaeCoxae 2–4 very narrow,Coxae 6 and 7 longerCoxae 6 equal toCoxae 6 and 7, flat,slightly visible inthan the pereonites,pereonite, 7,broad, longer thandorsal view, muchcoxae 7 overlappingextendingthe correspondingshorter thanlateral margin ofbeyond, coxae 6–pereonite;pereonites; coxae 5–pleonite 1–27 posteroventralposteroventral7, flat, broad,laterallyposteroventral anglesangles broadlymargin roundedexpanded, 5 nearlyacuteroundedas long as pereonite,6–7 longer than thepereonitesAntennaWith 10 articlesWith 10 articlesWith 9 articlesWith 11 articles,slightly longerthan antennulaPleon length~16% BL~14% BL~15% BL~16% BLRatio of maximum0.750.750.800.84pleon width tomaximumpereion widthPleonitesPleonite 3 widestPleonite 4 widestPleonite 2 widestPleonite 3 widestPleotelsonBroadly round, 2.0Evenly rounded, 1.5Broadly round, 1.7Pleotelson 1.8 timestimes as wide as longtimes as wide as longtimes as wide asas wide as long,long, laterallateral marginsmargins convexconvexRamiEndopod 1.05 times asEndopod 0.8 times asEndopod as long asEndopod 1.3 timeslong as exopodlong as exopodexopodlonger thanexopodPereopod spinesPereopods 1–3AbsentAbsentAbsentpropodus inner-lateral margin withfew robust spines