Bionomics of mycophagous Coccinellid, Psyllobora bisoctonotata (Mulsant) (Coleoptera: Coccinellidae)Abstract : In India, Psyllobora bisoctonotata Mulsant feeds on powdery mildew in natural condition. Here, we report the biology of P. bisocotonotata. The natural presence of this beetle in Indian Agricultural Research Institute Campus, New Delhi, India has been documented during the year 2006-2007 on the leaves of Morus alba Linn. (Moraceae) and Dalbergia sissoo Roxb. (Leguminosae). The bionomics of P. bisoctonotata are discussed here.