Choice of pupal habitats by a moth, Zeiraphera diniana Gn. (Lep., Tortricidae), defoliating lodgepole pine, Pinus contorta (Douglas), in northerly, non‐alpine zones

Higher rates of pupation within the larval feeding habitat (foliage) are reported from a non‐alpine plantation forest of lodgepole pine than are normal in alpine larch forests where pupation occurs in the soil. Experimental evidence suggests that neither host plant species nor temperature conditions are responsible for the difference. High rates of pupal mortality in the soil of wetter non‐alpine forests may have resulted in selection of an alternative pupal habitat.