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nominal species Unio zig-zag var. illius de Gregorio, 1914

Unio zig-zag var. illius de Gregorio, 1914 = Truncilla donaciformis

de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 3a-c.
(intro'd as intra-sp. of Unio zigzag Lea, 1829)

Taxonomic Opinions

+ Truncilla donaciformis (Lea, 1828) — Watters et al., 2009: 310.

= Unio zig-zag var. illius de Greg. — de Gregorio, 1914: 41, pl. 4, figs. 3a-c.