An. Rᵫ. Enoo. 1978. 23:409-42 Cyrigh  1978yAnnlReviesIn. Allrighsreserve BIOLOGICAL CONTROL OF INSECT PESTS BY ENTOMOGENOUS FUNGI . Ferron InsuNaionadelaReereAgronoiqueSaionde Reeresde ue Biologique, LaMinire 78 Vrsaills, Franc +6160 nspiteofthereentadvancesininsectpatholog,thestudofmcosescausedb entomogenousfungihasheldarelativelymodestposition.Themajorresearchefort hasbeendirectedtowardthestudyofbacteriaandviuseswhose potentalitiesas biological conrol agents for the microbial control of insect pests of crops were consideredtobegreater.hisattitudeprobabycanbeexpainedbytheincreasein ourknowledgeofgeneralmicrobiology,especiallymedical,withmoreemphasisin thefields ofbacteriology and virology than in mycology. However,forthepast 15 years,researchwiththeentomogenousfungihasbene ted fromarenewedinterest, which arosefromabetterunderstandingofthe role ofnaturalphenomenaintheregulationofinsectpopulations,amongwhichepizoot icscausedbyfungihave played adeterminant part incertain cases. urthermore therewasaneedtodevelopnewtechniquesofiologicalcontrolfortheexpandig application ofthe concepts ofintegrated controlĤ Because ofthis there is an increasing numberofscientiic publication devoted to this problem. The acquisition ofnew knowledge and the evolution ofresearch programs are o rapid that itis absolutely necessary to devote an everincreasing eorttotheanalysisandcompilationofthedatacontainedintheliterature. Since themaority ofthepublications concerning mycoses in insects are not in English, theysuerfromalimiteddistribution.AlthoughIcannotpossiblypretendto have studiedalltheeistingworldliterature conerning thissubectthat haseen pub lished during the past few years, nevertheless, through direct contact, on various occasions witCzech, erman, apanese, Polish, Soviet and other coleagues I have come to realize the importance oftheir contributions and the need to be acquaintedwththeirworkdespitethebarriersofanguage.Therefore,thepurpose ofthis paperisanobjectivereviewofboththeresultsachievedinthestudyofthe pahologyomycosesandthepossibleapplicationofentomogenousfungiinbiologi- 09 0066-4170/78/0101-0409$01.00 Annu. Rev. Entomol. 1978.23:409-442. Downloaded from www.annualreviews.org by Stanford University - Main Campus - Lane Medical Library on 10/13/12. For personal use only.