FIGURE 4 in Relict populations of Diaphanosoma (Cladocera: Ctenopoda) in the Chadian Sahara, with the description of a new species

FIGURE 4. Diaphanosoma bopingi sp. nov. from Lake Bokou, Ounianga. A, Head and antennae. B, Swimming antenna (square: zone shown on the SEM micrograph of fig 5 A). C, Postabdomen. D, Postero-dorsal spine of valves. E, Anterior half of ventral valve margin with long plumose setae a= anterior, p= posterior). F, Posterior part of ventral valve margin with large spines and filaments. F, Enlarged anterior section of F. H, Trunk limb 6 (P6).