Wang, Z.H., Jian, K.W., Tong, L.N., & Wang, J.P. 2007 [Niche of Hemiberlesia pitysophila and its three parasitoids.|. Journal of Fujian Agriculture and Forestry University (Natural Science Edition) 36: 16-19

Notes: The niche breadth, overlap and proportional similarity of Hemiberlesia pitysophila and its parasitoids, Coccobius azumai, Encarsia amicula and E. citrina, were measured from June to September in 2003. The results showed that C. azumai (introduced) did better than E. amicula (native) in the use of resources even though they both parasitize on female H. pitysophila. E. citrina (on male scales) was more dominant in the use of resources than E. amicula (on female scales) even though they are both native parasitoids.