Calosoma (Ctenosta) guineense Imhoff, 1843

Calosoma guineense Imhoff, 1843: 164 (type: Aquapim; Muséum National d'Histoire Naturelle, Paris)
Calosoma guineense Breuning, 1927: 160
Calosoma colmanti Burgeon, 1928: 431 (type: Sassa, Musée Royal de l'Afrique Central, Tervuren)
Calosoma (Callipara) guineensis Lapouge, 1932: 404
Ctenosta (Paractenosta) guineense Jeannel, 1940: 131


Length 22-26 mm. Both sexes have unmistakable characteristics that allow easily to distinguish them from the other species of the subgenus: tarsi with red gold hair on the underside, protibiae with apical ends dilated, and in the males with a series of indentations on the external side. These characteristics led Breuning (1928) towards the creation of the subgenre Paractenosta. The species is easily recognizable even to a cursory examination for the sculpture of the elytron with intervals of the same width and heigth ("omodyname" sculpture of Jeannel), smooth and only slightly raised, and for the bronze-purple color of the upper body.
It is present in West Africa: Côte d'Ivoire, Togo, Nigeria, Congo.

Examined specimens and literature’s data
Central African Republic: Bangui, foret de Bimbo (EM, SB); Sassa (type of Calosoma colmanti, MRCA)
Côte d'Ivoire: Comoe (SB), Lamto (SB)
Democratic Republic of the Congo: Kolwezi (EM, SB), Medje (Breuning, 1927: 160), Kassai (Jeannel, 1940: 131)
Ghana: Akuapim dist. (type of Calosoma guineense MNHN)
Nigeria: Ibadan (Breuning, 1927: 160)
Togo (Breuning 1927: 160)

Notes: Winged. Active individuals were found just before the beginnig of the raining season, in March and April, as well as after its ending, in October and November.

Calosoma (Ctenosta) guineense
Imhoff, 1843
Cote d'Ivoire: Comoe, IV.98
Calosoma (Ctenosta) guineense
Imhoff, 1843
Cote d'Ivoire: Lamto, 5°02'W 6°13'N, 15.III.86, Rasplus lgt.

Back