The Chaetocnema longicornis species-group: systematics and geographic distribution (Coleoptera : Chrysomelidae, Alticinae)

The known species of the longicornis species-group in the genus Chaetocnema Stephens, 1831, are revised. A diagnosis of the C. longicornis species-gro up is given and five new species are described from Republic of South Afric a and Democratic Republic of Congo: C. kapirensis Sp. n. (Lualaba Province) , C. mariobiondii so, n. (Kwa-Zulu Natal, Wets), C. zulu (Kwa-Zulu Natal, C entral Drakensbeg), C, mapumalangaensis (Mapuma langa), and C. phuthaditjha bensis (Free State). Redescription and line drawings of male and female gen italia of C. longicornis Jacoby, 1895 and C. reprehensa Bechyne, 1960, and SEM photographs of particular morphological aspects of all species are also included. Finally ecological data on some species are supplied.