TABLE 2 in Morphology and molecular evidence reveal hidden diversity among snapping shrimp of the Alpheus obesomanus group (Decapoda: Alpheidae) with the description of a new species from Brazil

TABLE 2. Characters used to differentiate Alpheus coralvivo sp. nov. from the morphologically similar Alpheus Fabricius, 1798 species. *Mostly based on the comparative material cited in Appendix 1 and **based on the comparative material, illustrations, and description provided by Holthuis (1980).
Characters/SpeciesAlpheus coralvivo sp. nov.Alpheus simus *Alpheus saxidomus **Rostrum Relative length of the second article of antennular peduncleAbsent Approx. 4 times as long as visible part of first articleAbsent Around 3 times as long as visible part of first articleAbsent or vestigial Approx. 2.5 times as long as visible part of first articlePropodus spines (excluding distal pair)4–63–45–6Shape of distolateral spiniform seta of uropodal exopodSlenderSlenderStoutColour of distolateral spiniform seta uropodal exopodDark brown, black or not pigmentedNot pigmentedDark brown or blackDiaeresis DepthAbsent 1–12 mAbsent 2–146 mPresent 2–12 mDistributionNorthwestern Brazil (Rio Grande do Norte and Bahia)South Florida to Caribbean SeaEastern Pacific (Costa Rica, Panama south to Colombia and Galapagos)