TABLE 2 in A morphological and molecular study of Ligia exotica Roux, 1828 (Crustacea: Isopoda: Ligiidae) from Japan, with descriptions of two new species

TABLE 2. Main differences among three Ligia species.
CharactersL. exotica Roux, 1828L. furcata sp. nov.L. laticarpa sp. nov.Mandibleright lacinia mobiliswith 1 large and 7–11 small triangular projectionswith a large triangular projection and several small rounded projectionswith a large triangular projection and several minute rounded denticlesMaxillipedpalparticles 1–4 partly coalesced, articles 4–5 slightly coalescedarticles 2–4 slightly coalescedarticles 2–4 partly coalescedMale pereopod 1carpus ventral marginslightly or not swollenslightly swollenstrongly or weakly swollenpropodus projectionsimplefurcatesimpleMale pereopods 2, 3merus ventral marginstraightweakly swollenweakly swollenMale pleopod 2appendix masculinalacking projection on lateral and medial surfaces, with minutely spinous swelling on dorsal surface, distal margin roundedwith an angular projection on dorsolateral surface and minutely spinous swelling on lateral surfacewith a rounded projection on dorsomedial surface and minutely spinous swelling on lateral surfaceFemale pereopod 1merusstraightstraightweakly widened distallyFemalemerusshorter than carpuslonger than carpuslonger than carpuspereopods 2, 3carpusbroadnarrownarrowpropodusproximal part strongly curvedstraightstraightMale dorsal surfaceblue spotsabsentabsentpresent16S rRNAposition 63AAGposition 175GAAposition 251ACAposition 270TATposition 481GAG