Biology and biological control of the invasive thrips Chaetanaphothrips orchidii (Moulton) in Citrus

Abstract: Chaetanaphotrips orchidii (Moulton) (Thysanoptera: Thripidae) is an invasive thrips species first identified damaging Spanish citrus in 2016. Since then, it has caused severe damage to citrus fruit in all major citrus-producing areas of the country. Due to its exotic origin, little is known about its biology in citrus orchards in Mediterranean conditions. Obtaining this information would be beneficial for developing an effective and sustainable integrated pest management program. For this, we are conducting field research to determine its seasonal trend, pupation sites, damaging period, and natural enemy complex. Moreover, we are studying the life cycle of C. orchidii pest under controlled conditions. This information will be used to design a sampling plan and implement a biological control strategy against this invasive pest in citrus. During the presentation, the most recent findings on C. orchidii biology in Mediterranean conditions and their implications for its management will be discussed.