Table 4 in Taxonomic and Biogeographical Status of Three Species of the Spider Crabs of the Genus Acanthonyx Latreille, 1828 (Majoidea: Epialtidae) as Determined by DNA Barcoding and Morphological Analyses Along the Western Atlantic

Table 4. Morphological characters of some species of Acanthonyx Latreille, 1828. (CL: carapace length)
Species/CharactersCL Maximum size (mm)RostrumCarapace shapePreorbital teethBrachial RegionA. petiverii> 25"U"-shapedelongate, subpentagonal, 2curved forwards2 small teeth, notlateral lobes, smooth or tuberclespointedwith no apparent pattern; lateralmargins nearly parallel or parallelA. depressifrons<5"V"-shaped; strongly3 lateral lobes, smooth,blunt, rounded, much-Manning and Holthuis,depressedshorter than rostral1981teethA. euryseroche Griffin<18spines weakly3 lateral lobes, broad, smooth,directed forward and3 evident teethand Tranter, 1986deflexed, basallysmall tuberclesslightly outward butbroad, narrower inhardly upwardthe apex, sometimesapically incurvedA. formosa Wu, Yu and<28"V"-shapedlongitudinally ovate; dorsaltriangular, directed2 relatively large andNg, 1999surface smooth, covered withobliquely outwardstriangular lobesvery low, felt-like pubescenceA. limbatus A. Milne---tubercles well markeddirected obliquely3 evident teethEdwards, 1862upwardsA. lunulatus (Risso,> 15"U"-shaped--1816)A. minor Manning and<5"V"-shaped, not3 lateral lobes, smooth, tubercles short and blunt-Holthuis, 1981markedly depressednot evident