TABLE 1 in A new species of Metaphrixus Nierstrasz & Brender à Brandis, 1931 (Isopoda: Bopyridae: Hemiarthrinae) associated with an Hippolytidae shrimp from Costa Rica

TABLE 1. Comparison of taxonomically important morphological characters of the described species of Metaphrixus infesting caridean shrimps.
CharacterSpeciesMetaphrixus caroliiMetaphrixus intutusMetaphrixusMetaphrixusMetaphrixusNierstrasz & BrenderBruce, 1966rastriferissetouchiensiswehrtmanni sp. nov.à Brandis, 1931Markham, 1990Shimomura, Ohtsuka& Sakakihara, 2006EyespresentpresentpresentabsentpresentHeadnearly rectangular,mushroom-shapedquadrangular,indistinctly separatedsubquadrangular,longer than broadand deeply set intodeeply set intofrom pereon, frontaldeeply set into pereon,pereonpereonmargin concavefused posteriorly butnot laterallyMetaphrixus caroliiMetaphrixus intutusMetaphrixusMetaphrixusMetaphrixusNierstrasz & BrenderBruce, 1966rastriferissetouchiensiswehrtmanni sp. nov.à Brandis, 1931Markham, 1990Shimomura, Ohtsuka& Sakakihara, 2006Antennuleunsegmentedindiscernible3 articles3 articles2 articlesextended flapAntennaeunsegmented3 articlesunsegmented flap5 articlesunsegmentedextended flapPereopods7, 27, 27, 3 (third7, 27, 3 (third reduced)(concave side,reduced)convex side)Pleomeres5 pleomeres: first5 pleomeres:5 pleomeres: first5 pleomeres:5 pleomeres: first fourfour with lanceolatefirst four withfour with lobate1–2 distinct; 3–4with uniramous ovateto oval uniramouslarge and lobularlateral plates onindistinct, each withlateral plates, fifthlateral plateslateral plates, fifthboth sides, fifthventral tubercle, firstsubtriangularsubtriangularsubrectangular,four with lanceolatestraight acrossto oval lateral plates;posterior marginfirst two subequal inlength, lateral plates2–4 decreasing inlengthPleopods4 pairs of uniramous4 pairs of4 pairs of4 pairs of uniramous4 pairs of uniramouslanceolate to ovaluniramous finger-uniramouspleopods, lanceolate,lanceolate pleopods,pleopodslike to lobularfoliate lanceolatecurved inwards andcurved downwardspleopodspleopodscovered in scalesUropodsabsent (withabsentabsentabsentabsentvariation, seeMarkham, 1985)HostHippolytePalaemonellaPericlimenaeusHippolyte sp.Hippolytepleuracantharotumanarastrifer Bruce,obliquimanus Dana,(Stimpson,(Borradaile, 1898);198018521871); HippolyteCuapetes grandisobliquimanus Dana,(Stimpson, 1860)1852Mode ofventral on pleondorsolateral onventral on pleonventral on pleonventral on pleoninfestationpleonDistributionAtlantic Ocean: USAIndo-West PacificPacific Ocean:Pacific Ocean: JapanAtlantic Ocean: Costa(Florida), Mexico,Ocean: Singapore,New CaledoniaRicaColombia, VirginTanzania, AustraliaIslandsReferenceNierstrasz &Bruce (1966, 1986)Markham (1990)Shimomura et al.Present studyBrender à Brandis(2006)(1931); Markham(1985, 1988);Román-Contreras& Martínez-Mayén(2011)
......continued on the next page