Isaria farinosa (Holmsk.) Fr. 1832

are eaten by

• Global Biotic Interactions: Tritirachium isariae (Petch) de Hoog 1973

are host of

• Global Biotic Interactions: Ceratostoma parasiticum
• Global Biotic Interactions: Syspastospora parasitica (Tul.) P. F. Cannon & D. Hawksw. 1982
• Global Biotic Interactions: Syspastospora parasitica (Tul.) P. F. Cannon & D. Hawksw. 1982
• Global Biotic Interactions: Syspastospora parasitica (Tul.) P. F. Cannon & D. Hawksw. 1982

are parasitized by

• Global Biotic Interactions: Melanospora fusispora (Petch) Doguet 1955
• Global Biotic Interactions: Syspastospora parasitica (Tul.) P. F. Cannon & D. Hawksw. 1982

are pathogens of

• Global Biotic Interactions: Ostrinia nubilalis Hübner
• Global Biotic Interactions: Philanthus triangulum (Fabricius 1775)
• Global Biotic Interactions: Lambdina fervidaria Hübner 1831
• Global Biotic Interactions: Adelges (Annandina) tsugae Annand 1924
• Global Biotic Interactions: Musca domestica Linnaeus 1758

have host

• Global Biotic Interactions: Acer saccharum Marsh.
• Global Biotic Interactions: Abies lasiocarpa (Hook.) Nutt.
• Global Biotic Interactions: Pinus ponderosa Douglas ex C. Lawson
• Global Biotic Interactions: Picea glauca (Moench) Voss (Сива смрча)
• Global Biotic Interactions: Amanita virosa Bertill. 1866