Distal edges of labrums and mandibles of some Thai Callomegachile (a–k females, l–o males) a M. (Callomegachile) atratiformis b M. (Callomegachile) chiangmaiensis sp. nov. c, l M. (Callomegachile) disjuncta d, m M. (Callomegachile) faceta e M. (Callomegachile) fulvipennis f M. (Callomegachile) impressa g M. (Callomegachile) monticola h M. (Callomegachile) odontophora i M. (Callomegachile) parornata j, n M. (Callomegachile) umbripennis k M. (Callomegachile) umbripennis (BSRU AA-4620) o M. (Callomegachile) umbripennis (BSRU AA-3654, BSRU AA-3662 and KKIC-02).

  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. https://doi.org/10.3897/zookeys.997.34935