https://phys.org/news/2018-11-caterpillar-fungus-cahoots-threaten-fruit.html

"The fungus is an incredibly opportunistic pathogen. It infects all kind of plants. It also infects animals on occasion, including humans," Berenbaum said. "And it's very, very good at breaking down toxins."

The caterpillar, Amyelois transitella, also is an opportunistic feeder. Unlike most insect larvae, it somehow overcomes the defenses of a variety of host plants, including almonds, pistachios and figs. The caterpillar chews its way in and contaminates the fruits and nuts with its excrement and webbing. It also opens the door to A. flavus infection. Unlike many other insects, the navel orangeworm caterpillar can metabolize aflatoxin, making it immune to this toxic fungal byproduct, Berenbaum said.