FIGURE 4. A–D in A new genus and species of primary freshwater crab and a new species of Artopotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from western Yunnan, China

FIGURE 4. A–D, Semicirculara lincangensis gen. & sp. nov. A, B, holotype, male, 18.8 × 14.4 mm, NNU 160562: A, sternopleonal cavity with right G1 in situ; B pleon; C, D, paratype, female, 20.2 × 15.9 mm, NNU 160567: C, pleon; D, thoracic sternum and vulvae. E, Pararanguna semilunatum (Dai & Chen, 1985): female, 22.3 × 17.1 mm, NNU 151103; thoracic sternum and vulvae. F, Aparapotamon inflomanum Dai & Chen, 1985: female, 21.6 × 17.9 mm, NNU 142202; thoracic sternum and vulvae. Scale bar = 1.0 mm.