genus: DICRONORHINA Hope 1837
species: micans (Drury,1773)
origin: Zaire

species: derbyana  Westwood, 1841
origin: Zambia, Kafue, leg. Petr Malec january/2005

subspecies: layardi  Péringey 1882(1892)
origin: Namibia

subspecies: conradsi  Kolbe, 1909
origin: Tanzania

subspecies: oberthueri  Deyrolle 1876
origin: Tanzania

species: cavifrons  Westwood 1841
origin: not known to me, widely in western Africa - Cote d´Ivoire, Ghana, Togo

nature size: females not bigger than 50 mm, males 40-55, D.derbyana conradsi is the smallest within the genus, D.micans belongs to largest with males up to 60mm mm
sexual dimorphism: males have "T" shape horn (D.cavifrons with forky ending on clypeus, D.micans has the clypeus oval shape)

Big attractive cetonids, easy to reproduce. Life cycle takes 8-9 months (2-3 in cocoon stage). Average imago life expectancy is about 3-4 months. I keep larvae together 20-30L3/10-15l of substrate, it is worth to feed larvae pretty much - adults are bigger. Too wet (or too dry) substrate in pupa stage causes widely elytra deformations.