FIGURE 4. Petasma. A–B in On the differences between the two widely distributed and closely related rock shrimps Sicyonia japonica Balss, 1914 and S. parajaponica Crosnier, 2003 (Dendrobranchiata, Penaeoidea, Sicyoniidae), with a new record of S. japonica from Taiwan

FIGURE 4. Petasma. A–B, Sicyonia japonica Balss, 1914, Japan, male 19.2 mm cl (NTOU M02582); C–D, S. parajaponica Crosnier, 2003, Taiwan, male 20.1 mm cl (NTOU M02592). A & C, dorsal view; B & D, ventral view.