Contribution to the synonymies, distributions, and bionomics of the Old World species of Macrosiagon (Coleoptera: Ripiphoridae) Author Batelka, Jan text Acta Entomologica Musei Nationalis Pragae 2011 2011-12-09 51 2 587 626 journal article 10.5281/zenodo.5329411 0374-1036 5329411 Macrosiagon callewaerti Pic, 1950 ( Figs. 25–27 ) Macrosiagon callewaerti Pic, 1950c: 360 . Type locality: [ Democratic Republic of the Congo ], Luluabourg [= Kananga]. Type material examined. HOLOTYPE : 1 ex. (much damaged, antennae and left elytron are missing) ( MRAC ), ‘MUSEÉ DU CONGO / Luluabourg [p] / Don du Musée de Bāle ) [hw] / ( P. Callewaert ) [p] // R. DET [p] / W [HW] / 5626 [p] // Macrosiagon / callewaerti / n. sp. [ Pic’s hw] // HOLOTYPUS [p] / Callewaerti / Pic [hw, orange label]’. Remarks. The species is characterised by the unicolorous whitish elytra, long head with a largely elevated vertex, elevated medial lobe of pronotal disc and the flattened and shortened MT 2. Excepting of the shape of MT 2 being similar to males of M . flavipennis (Leconte, 1866) , in which MT 2 is cylindrical and as long as MT 3. Macrosiagon flavipennis is widespread in the New World from the U.S.A. ( RIVNAY 1929 ) through Mexico ( CHAMPION 1891 ) to Argentina ( MANFRINI DE BREWER 1966 ). Distribution. So far known only from the type specimen from. Democratic Republic of the Congo .