Apis (Callomegachile), Callomegachile Michener

Chatthanabun, Nontawat, Ascher, John S., Pinkaew, Nantasak, Thanoosing, Chawatat, Traiyasut, Prapun & Warrit, Natapot, 2020, Resin bees of genus Megachile, subgenera Callomegachile and Carinula (Hymenoptera, Megachilidae) from Thailand with description of a new species, ZooKeys 997, pp. 95-144 : 95

Subgenus Callomegachile Michener

Chalicodoma (Callomegachile) Michener, 1962: 21. Type species: Chalicodoma mystaceana Michener, 1962, by original designation.

Chalicodoma (Eumegachilana) Michener, 1965: 191. Type species: Megachile clotho Smith, 1861, by original designation.

Chalicodoma (Morphella) Pasteels, 1965: 537. Type species: Megachile biseta Vachal, 1903, by original designation.

Chalicodoma (Orientocressoniella) Gupta, 1993: 165. Type species: Megachile relata Smith, 1879, by original designation [but Gupta’s description refers to a bee quite different from the nominal type species, see Baker and Engel 2006].

Chalicodoma (Alocanthedon) Engel & Gonzalez, 2011: 53. Type species: Chalicodoma odontophorum Engel, 2011, by original designation.

Diagnosis.

Body elongate. Female mandible three to seven teeth with minutely roughened ridge. Punctures on mesoscutum and lower part of mesepisternum striated. Small appressed hairs on inner mandibular surface of adductor interspace present. In males, carina on T6 bilobed or lacks median emargination; posterior margin of T6 simple and without tooth.

Comments.

The subgenus Pseudomegachile Friese, 1898 is superficially similar to Callomegachile , in term of size and appearance. Females of Pseudomegachile can be recognized by the presence of long erected hairs on inner mandibular surface of adductor interspace, whereas males can be easily recognized by the presence of multidentate apical margin of T6.