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SEM images of the labrum and first labial segment. (A) Ventral view of Picromerus bidens; (B) Ventral view of Picromerus lewisi; (C) Ventral view of Cazira bhoutanica; (D) Lateral view of Picromerus bidens; (E) Lateral view of Picromerus lewisi; (F) Lateral view of Cazira bhoutanica.
