TABLE 1 in Petrolisthes tanmayi sp. nov., a new species of the porcelain crab (Decapoda: Anomura: Porcellanidae) from G-Plot Island, Sundarbans, India

TABLE 1. Comparison of Petrolisthes tanmayi sp. nov. with related species. CharactersP. tanmayi sp. nov.P. kranjiensisP. cinctipesP.ornatusP.armatus(Source Johnson(Source Hiebert(Source(Source1970)2015)LewinsohnMantelatto et al.1969)2011)Carapace shapeRoughly rectangular.ApproximatelyRound.Ovoid.Roughly oval.and size1.0–1.1 times longerrectangular, aboutAs long as broadAbout 1.11.1–1.2 times asthan broad.1.1 times as longcl not mentioned.times as longlong as broad. clcl 7.8 mm, cw 7.2 mmas broad.cw 24 mmas broad.not mentioned, cwcl 8.75 mm, cwcl 8.6 mm,13.6 mmnot mentionedcw 8.0 mmFrontal width/Frontal width aboutFrontal widthNot mentionedNot mentionedNot mentioned.maximum0.33 cw0.30–0.38 cwcarapace width(cw)Frontal regionTrapezoidal andRoundedTriangular andTriangularFront broad,deflexed withwith well-strongly deflexedwithsinuouslyprominent medianmarked medianwith conspicuousprominenttriangular,longitudinal groove onlongitudinalmedian groovemedian groovesometimesdorsal surfacegroove on dorsalpubescent, withsurfacedeep mediansulcusCarapaceSmooth.Smooth.Finely granulateCovered withCarapace smoothsurface andSlate-brown withSlate-green tobut not rough. Red-tuberclesor pubescent,colourirregular light brownalmost black orbrown, occasionallyof varyingcovered withpatchesslate-brownblueheights.granules andColour notshort, roughmentionedplications. Colournot mentionedEpibranchialAbsentAbsentAbsentAbsentSingle,spineoccasionallyobsolescentP1 carpus2.5 times as long asMore thanAlmost invariablyNot mentioned2.0–2.5 times asbroad; anterior andtwice as long as1.5 times longerlong as broadposterior marginbroad; anterior &than wide andsubparallelposterior marginanterior andparallelposterior marginconverge distallyTooth at anteriorAbsentSmall, acute singleAbsent; distinctBlunt sub-3 low, widely set,margin of P1sub-basal toothlobebasal spinespine-tipped teeth,carpus4th occasionallypresentDistal spine at221TuberclesA row of large,posterior borderpresent, distalflattened granulesof P1 carpusmost sharp.with 1–4 producedinto spines, 1ending distally inlarge bifid spine(Source Johnson 1970)(Source Hiebert 2015)(Source Lewinsohn 1969)(Source Mantelatto et al. 2011)Antennular peduncle article 1 & article 3Mesial angle round with 1 or 2 prominent denticles and rest of margin separated by 1 incision and 1 prominent denticle. Lateral margin unarmed. Article 3 without of spinuleDistal margin armed with 2 very small internal teeth, 1 spine on lateral margin, outer margin not overreaching tip. Article 3 with single spinuleNot mentioned.Not mentionedNot mentionedP2 merus toothRudimentary, vestigial or absent at ventrolateral marginLarge tooth distally at ventrolateral marginNot mentioned.Not mentioned1–5 spines throughout ventrolateral marginP2 – P4 colourationSlate-brown and light brown bandBanded with pale lime green or greenish fawn bandYellow median band on propodus; dactylus yellow with narrow brown bandNot mentionedNot mentionedSexual dimorphismP1 palm ventral margin pubescence present in females, absent in malesNot mentionedMales with single pleopods on abdominal somite 2. Females with long, branched pleopods on somites 3–5Not mentionedNot mentioned