Portunus segnis (Forskål, 1775)

Al-Aidaroos, Ali M., Kumar, A. A. J., Al-Haj, Ahmed E., Al-Sofyani, Abdulmohsin, Crosby, Michael P. & El-Sherbiny, Mohsen M., 2019, Morphology of the complete larval stages of Portunus segnis (Forskål, 1775) (Crustacea: Brachyura: Portunidae) from the Gulf of Aqaba, Saudi Arabia, Zootaxa 4638 (2), pp. 199-218 : 200

Portunus segnis (Forskål, 1775)

( Figs. 1–12 )

Figures

FIGURE 1. Portunus segnis Forskål, 1775, lateral view of carapace; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) dorsal view of carapace of megalopa.

FIGURE 2. Portunus segnis Forskål, 1775, antennule; a) zoea I; b) zoea II; c) zoea III; d) zoea IV, e) megalopa.

FIGURE 3. Portunus segnis Forskål, 1775, antenna; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa.

FIGURE 4. Portunus segnis Forskål, 1775, mandible; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa.

FIGURE 5. Portunus segnis Forskål, 1775, maxillule; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa.

FIGURE 6. Portunus segnis Forskål, 1775, maxilla; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa.

FIGURE 7. Portunus segnis Forskål, 1775, first maxilliped; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa.

FIGURE 8. Portunus segnis Forskål, 1775, second maxilliped; a) zoea I; b) zoea II; c) zoea III; d) zoea IV; e) megalopa; f) third maxilliped of zoea IV; g) third maxilliped of megalopa.

FIGURE 9. Portunus segnis Forskål, 1775, dorsal view of pleon; a) zoea I; b) zoea II; c) zoea III; d) zoea IV.

FIGURE 10. Portunus segnis Forskål, 1775, lateral view of pleon; a) zoea I; b) zoea II; c) zoea III; d) zoea IV.

FIGURE 11. Portunus segnis Milne Edwards, 1834, pereiopods; a) zoea III; b) zoea IV; megalopa; c) cheliped; d–g) first to last ambulatory legs.

FIGURE 12. Portunus segnis Forskål, 1775, megalopa; a) pleon dorsal view; b) pleon lateral view; c–g) pleopods of somites 2–6; h) uropod.