FIGURES 1A–F. Pisidium dorbignyi. A in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America

FIGURES 1A–F. Pisidium dorbignyi. A. Neotype (MHNM 15544), right valve, outer view. B–F. P. dorbignyi (MLP 10497). B. Posterior view. C. Detail of the escutcheon. D. Left valve, inner view. E. Dorsal view. F. Right valve, inner view. Scale bars: A, B, D–F. = 500 μm; C = 200 μm.