TABLE 2 in A new genus and six new species of endemic landhopper in the family Arcitalitridae (Amphipoda: Talitroidea) from New Zealand

TABLE 2. Summary of key morphological differences between the six species of Koekotroides gen. nov. CharacterSpeciesKoekotroides moowhitihauuru sp. nov.Koekotroides taapinea sp. nov.Koekotroides tewhaarua sp. nov.Koekotroides maene sp. nov.Koekotroides pekehau sp. nov.Koekotroides ngaokiroa sp. nov.Body length4–7mm4–5.5mm5–7mm5–6.5mm6–10mm6–8mmMaxillipedModerately splayed, endopodite apex narrowly rounded; palp article 4 small but distinctModerately splayed, endopodite apex narrowly rounded; palp article 4 small but distinctCompact, not splayed; endopodite apex rounded; palp article 4 small but distinctCompact, not splayed; endopodite apex rounded; palp article 4 small but distinctStrongly splayed; endopodite apex subacute, inner margin strongly arcuate; palp article 4 absentStrongly splayed; endopodite apex subacute, inner margin weakly arcuate; palp article 4 absentAntenna 211–13 articles10–11 articles11–14 articles9–12 articles11–14 articles12–15 articlesGnathopod 1 propodus setaePosterior margin with 4 spear-like robust setaePosterior margin with 4 spear-like robust setaePosterior margin with 4 spear-like robust setaePosterior margin with 4 spear-like robust setaePosterior margin with 3 spear-like robust setaePosterior margin with 3 spear-like robust setaeGnathopod 1 palmPalm not distinct, simplePalm not distinct, simplePalm not distinct, simplePalm not distinct, simplePalm distinct, parachelatePalm not distinct, simpleEpimeron 2Posterior margin nearly straight along distal halfPosterior margin weakly sinuate, distinct concavity above posteroventral cornerPosterior margin weakly convex to nearly straight, with small serrations or crenulations,Posterior margin almost smooth, weakly convex to nearly straightPosterior margin nearly straight along distal half, widest mediallyPosterior margin nearly straight along distal half, widest mediallyEpimeron 3Ventral margin convex anteriorly and concave posteriorly; posterior margin smooth, sinuate, convex medially, concave distallyVentral margin convex anteriorly and weakly concave posteriorly; posterior margin smooth, strongly sinuateVentral margin very convex anteriorly, distinctly concave posteriorly; posterior margin distinctly crenulate, convexVentral margin very convex anteriorly, distinctly concave posteriorlyVentral margin convex anteriorly, strongly concave posteriorly; posterior margin sinuate, smooth or weakly notchedVentral margin convex anteriorly, concave posteriorly; posterior margin sinuate, weakly notchedUropod 1 distolateral robust setaApproximately 0.3 x length of exopoditeApproximately 0.3 x length of exopoditeApproximately 0.5 x length of exopoditeApproximately 0.5 x length of exopoditeApproximately 0.5 x length of exopoditeApproximately 0.5 x length of exopoditeTelson1 large apical robust seta and 2 large dorsal robust setae on each side1 large apical robust seta and 2 large dorsal robust setae on each side1 large apical robust seta and 2 large dorsal robust setae on each side1 large apical robust seta and 2 large dorsal robust setae on each side1 large apical robust seta and 3 large dorsal robust setae on each side1 large apical robust seta and 3 large dorsal robust setae on each side