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Sawfly larvae of the family Diprionidae are defoliators of conifers, undergoing cyclical outbreaks. Here, we present a tachinid fly, identified as a Chetogena species, which was found parasitizing diprionid larvae from a recent outbreak on Jeffrey pines (Pinus jeffreyi) in Baja California's Sierra San Pedro Mártir National Park. The findings reported here are a new distributional record for Chetogena in Baja California.
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Ceccarelli et al. (2022) studied this question.
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