Macrosiagon callewaerti Pic, 1950

Batelka, Jan, 2011, Contribution to the synonymies, distributions, and bionomics of the Old World species of Macrosiagon (Coleoptera: Ripiphoridae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 587-626 : 599

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.

Figures

Figs 25–33. 25–27 – Macrosiagon callewaerti Pic, 1950; holotype. (25 – habitus dorsally; 26 – head frontally; 27 – metatarsomeres dorsally). 28–30 – Macrosiagon grombczewskii (Semenov, 1891), holotype (photos M. Engel 2010). 31–33 – Macrosiagon humeralis Pic, 1929. (31 – syntype; 32–33 – male from Tanzania, head frontally and metatarsomeres dorsally).