Iso-isariin B is a cyclodepsipeptide fungal metabolite originally isolated from B. felina that has insecticidal activity.1 It induces mortality in Sitophilus adults with an LD50 value of 10 μg/ml.
References
1. Langenfeld, A., Blond, A., Gueye, S., et al. Insecticidal cyclodepsipeptides from Beauveria felina J. Nat. Prod. 74(4),825-830(2011).
