Review Article

Follow the Footsteps of Leonardo Fea: An Example of an Integrative Revision of Freshwater Mussel Taxa Described from the Former British Burma (Myanmar)

Figure 6

Shells of Yaukthwa, Trapezoideus, and Pseudodon from Myanmar. (a) Yaukthwa nesemanni (Konopleva, Bolotov & Kondakov, 2017) (specimen RMBH biv 255/4; Sittaung River). (b) Yaukthwa nesemanni (specimen RMBH biv 144/23; Sittaung River). (c) Yaukthwa nesemanni (specimen RMBH biv 1022/3; Haungthayaw River). (d) Unio rectangularis Tapparone-Canefri, 1889 (=Yaukthwa rectangularis) (Tapparone-Canefri’s collection; holotype MSNG with its labels; Mole Stream near Teinthaw village, Ayeyarwady Basin). (e) Yaukthwa rectangularis [topotype RMBH biv 916/3; Mole Stream, Ayeyarwady Basin). (f) Yaukthwa dalliana (Frierson, 1913) (lectotype SMF 13699a; Lashio River near Lashio, Ayeyarwady Basin, northern Shan State, Myanmar). (g) Yaukthwa dalliana (topotype RMBH biv 982/2; Lashio River near Lashio, Ayeyarwady Basin). (h) Yaukthwa zayleymanensis (Preston, 1912) (syntype SMF 3615; Zayleyman, Upper Burma). (i) Yaukthwa zayleymanensis (specimen RMBH biv 679/3; Tarkat Stream, Ayeyarwady Basin). (j) Unio foliaceus var. fragilis sensu Tapparone-Canefri, 1889 (=Yaukthwa zayleymanensis) (Tapparone-Canefri’s collection; specimen MSNG with its label; Mole Stream, Ayeyarwady Basin). (k) Yaukthwa zayleymanensis (specimen RMBH biv 918/3; Mole Stream, Ayeyarwady Basin). (l) Trapezoideus mitanensis sp. nov. (holotype RMBH 1021/1; Mitan Stream, Haungthayaw Basin). (m) Trapezoideus mitanensis sp. nov. (paratype RMBH 1022/1; Mitan Stream, Haungthayaw Basin). (n) Trapezoideus mitanensis sp. nov. (paratype RMBH 1021/3; Mitan Stream, Haungthayaw Basin). (o) Pseudodon inoscularis sensu Hanley & Theobald, 1876 non Gould, 1844 ([8]: pl. IX, image 2). (p) Pseudodon kayinensis Bolotov et al., 2020 (RMBH biv 1026/1; Haungthayaw Basin). (upper part) and 1 cm (bottom part). No scale for (o) Pseudodon inoscularis. Photos: E.S. Konopleva (a–c, e, f, i, k, l–n), I.V. Vikhrev (d, j), and S. Hof (h, g).