FIGURE 3. Anthalona acuta n in Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonines

FIGURE 3. Anthalona acuta n. sp. from Lençóis Maranhenses, NE-Brazil (A–E) and Anthalona verrucosa (from same locality) (F), SEM. Carapace ornamentation, headshield of adult parthenogenetic females of. A. Adult parthenogenetic female, typical humpbacked shape for A. acuta n. sp. B. Pattern of tubercles seen dorsally. C. Dorsal detail of tubercles, posterior portion. D. Head shield (rostrum to the right) dorsally, with main head pores (MHp) and lateral pores (Lhp). E. Detail of head shield dorsally, with two connected major head pores in middle, all pores on an elevation. F. Detail of head pores of A. verrucosa ventrally, showing 3D configuration of the peculiar 8-shaped structures under the small pores, called "cosmaria" or "sacks".