TABLE 1 in Colimene, a new genus for three species previously assigned to Dynomene Desmarest, 1823 (Crustacea, Decapoda, Brachyura, Dynomenidae)

TABLE 1. Differences between Colimene gen. nov., Dynomene and Hirsutodynomene. Colimene gen. nov.Dynomene s. str.HirsutodynomeneCarapaceDistinctly wider than long; posterolateral margins gently converging; subquadrate (Figs. 1A, 2A, B, 3A, 4A, F, 6A, 9A, D)As long as wide or slightly wider than long; posterolateral margins strongly converging; subcircular or almost so (Fig. 1B)Carapace much wider than long, commonly subcircular; posterolateral margins strongly converging (Fig. 1C)Carapace regionsSurface smooth or almost so; regions not demarcated except for epigastric region (Figs. 1A, 2A, B, 3A, 4A, D, F, I, 6A, 9A, D)Surface granulose to almost smooth; regions weakly demarcated (Fig. 1B)Surface granulose or smooth; regions distinctly demarcated (Fig. 1C)Subhepatic region and infraorbital marginInfraorbital margin projecting anteriorly, clearly visible in dorsal view; subhepatic region gently swollen, tuberculate or granulate (Figs. 1A, 12A)Infraorbital margin not projecting anteriorly, not visible in dorsal view (Fig. 1B)Infraorbital margin not projecting anteriorly, not visible in dorsal view (Fig. 1C)Pterygostomial regionGently swollen, with cluster of granules or tubercles (Figs. 1D, 4E, J, 5A)Not raised, smooth (Fig. 1E)Not raised, smooth or granulate (Fig. 1F)ChelipedsElongate; basis-ischium and merus long; chelipeds unable to appress against carapace (Figs. 2A, 4A, F, 9A, B)Short; basis-ischium and merus very short; chelipeds closely appressed to carapace when retracted (Fig. 1E)Short; basis-ischium and merus very short; chelipeds able to appress against carapace when retracted (McLay 1999: fig. 17e)ChelaElongate, slender; outer surfaces almost smooth; proximal part of inner surface, near carpus, with prominent median tooth or spine (Figs. 2A, D–F, 3C, D, 4B, C, G, H, 5D, 9A, B, 12B)Short, stout; outer surfaces granulate or tuberculate; proximal part of inner surface, near carpus, with low rounded tooth (Fig. 1I, J)Short, stout; outer surfaces granulate or tuberculate; proximal part of inner surface, near carpus, with low tooth (McLay 1999: fig. 23c, d)Fingers of male chelipedFingers elongate, cutting edge of pollex smooth, unarmed (Figs. 2D, E, 4B, C, G, H, 9B, E)Fingers short, curved; cutting edge of pollex with 1 large tooth and several smaller teeth (Fig. 1I, J)Fingers short, curved; cutting edge of pollex with 1 large tooth and several smaller teeth or several large equal-sized teeth (McLay 1999: fig. 23c)Ambulatory legsMerus, carpus and propodus distinctly more elongate (Figs. 2A, G, 3E–I, 4A, F, 6A, 9A, D)Merus, carpus and propodus very short (McLay 1999: fig. 17a, b)Merus, carpus and propodus very short (McLay 1999: 17e)Fused male thoracic sternites 1–3Relatively broad, forming a wide pentagonal structure (Figs. 1D, 3B, 5E)Relatively narrower, forming a more quadrate structure (Fig. 1E)Relatively narrower, lateral margins sinuous, forming bell-shaped structure (Fig. 1F)Male pleonVery broad, with somites 2 and 3 prominently narrow, waist-like (Figs. 1G, 2L)Distinctly narrower, somites 2 and 3 less narrow, no obvious waist visible (Fig. 1H)Distinctly narrower, somites 2 and 3 less narrow, no obvious waist visible (Fig. 1F)