FIGURE 18 in A revision of the genus Pachygrapsus Randall, 1840 (Crustacea: Decapoda: Brachyura, Grapsidae), with special reference to the Southwest Pacific species

FIGURE 18. —Principal Component Analysis (PCA) on Pachygrapsus species using 15 morphological characters. Three complexes of species are identified: A, P. crassipes Randall, 1840, P. laevimanus Stimpson, 1858, P. loveridgei Chace, 1966, P. maurus (Lucas, 1846), P. transversus (Gibbes, 1850), with P. laevimanus/P. transversus and P. crassipes/P. maurus as subgroups; B, P. corrugatus (von Martens, 1872), P. fakaravensis Rathbun, 1907, P. plicatus (H. Milne Edwards, 1837), with P. corrugatus/P. fakaravensis as subgroup; and C, P. minutus A. Milne­Edwards, 1873, P. propinquus de Man, 1908. Three species are isolated: P. marmoratus (Fabricius, 1787), P. planifrons de Man, 1888, and P. gracilis (de Saussure, 1858).