Table 3 in A new western Atlantic snapping shrimp of the Alpheus macrocheles group (Caridea, Alpheidae) revealed by morphological, molecular and color data

Table 3. Characters useful for separation between Alpheus ramosportoae sp. nov., A. amblyonyx Chace, 1972 and A. macrocheles (Hailstone, 1835).
CharactersAlpheus amblyonyx Chace, 1972Alpheus macrocheles (Hailstone, 1835)Alpheus ramosportoae sp. nov.Relative length of rostrum to first article of antennular peduncleNearly reaching distal marginReaching mid-lengthReaching well beyond midlengthLength ratio of second and third articles of antennular peduncleApprox. 1.5Approx. 2.0Approx. 2.0Size of stylocerite relative to first article of antennular peduncleReaching distal endReaching beyond distal endReaching distal endScaphocerite relative to third article of antennular peduncleReaching mid-lengthReaching distal endReaching mid-lengthDistal tooth of scaphocerite relative to antennular peduncleReachig distal endDistinctly exceedingDistinctly exceedingDistolateral margin of uropodal exopodWith one mesial tooth and one lateral tooth flanking spiniform setaWith one acute lateral tooth and one mesial lobe flanking spiniform setaWith one mesial tooth and one lateral tooth flanking spiniform setaStrong crest on extensor margin of dactylus of the minor chelaAbsentPresentPresentDactylus of the major chelaTip strongly bulbousTip slightly bulbous, with distal extremity slightly acute in some specimensTip strongly bulbousPlungerDeveloped, with anterior surface distinctly angularRudimentary and flat, with small tooth on anterior surfaceDeveloped, with anterior surface distinctly angular