Stag beetles that have half male and half female body
This is a gynandromorph (an individual that consists of male and female) of Allotopus rosenbergi (stag beetle species living in Malaysia and Indonesia). The body has bilateral asymmetry, half side female and the other side male. This phenotype is quite rare, but have been widely observed in arthropods both in nature and in breeding conditions. We can see gynandromorphs of other stag beetle species as well on the internet (Ref.1, the link shows the gynandromorph of Dorcus hopei binodulosus, Prosopocoilus inclinatus inclinatus, Lucanus…