FIGURE 18. a in Grapsoid crabs (Decapoda: Brachyura: Thoracotremata) of the Persian Gulf and the Gulf of Oman

FIGURE 18. a, Thalassograpsus harpax (Hilgendorf, 1892), male (SMF 38449, CL = 10.24 mm, CB = 11.64 mm); b, the same species in its habitat with different colour pattern, NW of Qeshm city, Qeshm I., Persian Gulf, (photo by R. Naderloo); c, Metaplax indica H. Milne-Edwards, 1852, male (ZUTC Brach1160, CL = 16.6 mm, CB = 24.9 mm); d, the same species in its habitat, Saudi Arabia, Persian Gulf (photograph by M. Apel); e, Plagusia squamosa (Herbst, 1790), male (ZUTC Brach1133); f, the same specimen, ventral view.