摘要 : The pine processionary moth <i>Thaumetopoea pityocampa</i> (Den. & Schiff.) is one of the most harmful pests to pine species in Mediterranean countries including Turkey. Caterpillars of <i>T. pityocampa</i> are not only significan... 展开 The pine processionary moth <i>Thaumetopoea pityocampa</i> (Den. & Schiff.) is one of the most harmful pests to pine species in Mediterranean countries including Turkey. Caterpillars of <i>T. pityocampa</i> are not only significantly harmful to forest trees but also responsible for various allergic reactions in humans and animals. In this study, in order to find a more effective and safe biological control agent against <i>T. pityocampa</i>, we investigated fungal pathogens of <i>T. pityocampa</i> in the Black Sea Region of Turkey and tested their pathogenicity on it. Five different fungi were isolated and identified based on their morphological and molecular characteristics including ITS and partial sequence of EF1-[alpha]. Based on these characteristics, four isolates were identified as <i>Beauveria bassiana</i> cf. Clade C (Rehner and Buckley in Mycologia 97:84-98, 2005) and one isolate was identified as <i>Beauveria bassiana</i>. Among these isolates, <i>B. bassiana</i> KTU-24, <i>B. bassiana</i> cf. Clade C KTU-66 and KTU-67 showed the highest virulence with 100% mortality within 10 days after application. <i>B. bassiana</i> isolate KTU-24 produced the highest mycosis value with %100. Consequently, <i>B. bassiana</i> KTU-24 seems to be good candidate for further investigation as a possible biological control agent against this pest.Digital Object Identifier http://dx.doi.org/10.1007/s11046-010-9321-6 收起