Publications for:

pest = Helicoverpa (genus)
beneficial = Phalangium opilio (predator)

found 2 publications:

2005

Effect of diet on development and reproduction of the harvestman Phalangium opilio (Opiliones: Phalangiidae)
Environmental Entomology (2005) 34 (1), 6-13
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2001

Predation of Helicoverpa zea (Lepidoptera: Noctuidae) eggs and first instars by Phalangium opilio (Opiliones: Phalangiidae)
Journal of the Kansas Entomological Society (2001) 74 (4), 199-204
pestinfo wiki