Nohara, K. 1963 [Observations on the activity of Coccinellid-beetles in the citrus groves near Hagi, Hoshu.]. Science Bulletin of the Faculty of Agriculture, Kyushu University 20(2): 157-168.

Notes: A survey on the beneficial Coccenellid fauna was made between insecticide-sprayed citrus groves and those that were insecticide-free. Hosts mentioned include Icerya purchasi and Unaspis yanonensis.