FIGURE 2. Embryonic periods I and II in Embryology of the spider crabs Leurocyclus tuberculosus (H. Milne-Edwards & Lucas 1842) and Libinia spinosa (H. Milne-Edwards 1834) (Brachyura, Majoidea)

FIGURE 2. Embryonic periods I and II. Eggs in period I in A, Leurocyclus tuberculosus (scale bar: 100 µm) and B, Libinia spinosa (scale bar bar: 100 µm). C, L. tuberculosus egg with SEM observed yolk granules (scale bar: 100 µm). D, L. tuberculosus egg at the beginning of period II observed the embryonic primordium (scale bar: 200 µm). Detail: L. tuberculosus eggs in period II (scale bar: 200 µm). E, L. spinosa egg in period II lateral view (scale bar: 50 µm). F, L. tuberculosus egg in period II posterior view (scale bar: 50 µm). Ab, abdomen; Annt, antennula; Ant, antenna; Bl, blastomere; E, embryonic primordium; MI, maxilliped I; MII, maxilliped II; O, optic lobe; Y, yolk; YG, yolk granules.