Megachile (Callomegachile) impressa Friese, 1903, female a lateral view b frontal view c clypeus and mandible d dorsal view of metasoma e lateral view of metasoma.

  Part of: Chatthanabun N, Ascher JS, Pinkaew N, Thanoosing C, Traiyasut P, Warrit N (2020) Resin bees of genus Megachile, subgenera Callomegachile and Carinula (Hymenoptera, Megachilidae) from Thailand with description of a new species. ZooKeys 997: 95-144.