Macrosiagon humeralis Pic, 1929

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 : 608

Macrosiagon humeralis Pic, 1929

( Figs. 31–33 )

Macrosiagon humeralis Pic, 1929: 268 (type locality: ‘Kundelungus’).

Type material examined. SYNTYPE: 1 ex. ( Fig. 31 ) ( MRAC), ‘MUSEÉ DU CONGO / KUNDELUNGUS / Mme Tinant [p] // R. DÉT [p] / N [hw] / 1541 [p] // Macrosiagon / humerale n. sp. [Pic’s hw] // HOLOTYPUS [p, orange label]’.

Additional material examined. DEMOCRATIC REPUBLIC OF THE CONGO: 1 ♀ ( MNHN – coll. Pic, box no. 6), ‘Musée du Congo / Lalua: source Losoka / 10-II-1932 / G. F. Overlaet [p] // humerale / Pic [Pic’s hw]’. MALAWI: 4 JJ 4 ♀♀ ( Figs 32–33 ) ( BMNH, JBCP), ‘Nyasaland / Mlanje / Jan. 29. 1913 [respective Feb. 20., Feb. 24., Mar. 20., Mar. 24., Mar. 26.] / S.A. Neave / 1913-140 [p]’.

Remarks. Black species, with orange abdomen and one humeral spot on each elytron. Roughly and densely punctured, MT 2 shortened and flattened dorsally. From all other Macrosiagon species it differs by having the vertex with a deep, longitudinal impression anteriorly.

Distribution. Afrotropical species. Described from Democratic Republic of the Congo. It is recorded here from Malawi for the first time.

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).