Search at the Research Development institute for Plant Protection in Bucharest, in RJPP or other publications, look for papers wrote by Andrei A.M., Dinu Mihaela, Fatu Cristina
For South Africa contact on entomopathogenic, you can contact Drs Antoinette P Malan ([email protected]) and Pia Addison ([email protected]) at the University of Stellenbosch. They have done a lot of research on the topic.