Survival and development of Lacanobia subjuncta (Grote & Robinson) (Lepidoptera : Noctuidae) larvae on common weeds and crop plants of eastern Washington state

摘要

Ten common weed species, four tree fruit crops and four row crops were evaluated as hosts for larvae of Lacanobia subjuncta (Grote & Robinson), a noctuid moth pest of apple in eastern Washington. A separate comparative evaluation was made of the suitability of five varieties of apple as hosts for L. subjuncta larvae. Development was completed, from neonate larva to adult, on nine of ten weed species and seven of eight crops tested, indicating a broad potential host range for this insect. High rates of survival to adult, short developmental times, and large pupal weights were noteworthy on the weeds bindweed, dandelion, and mallow, and on potato. In the comparison of apple varieties, highest rate of survival to adult was with Red Delicious, greatest pupal weights were with Red Delicious, Gala, and Fuji, and shortest development times were with Gala and Golden Delicious. Strong seasonal variation (May versus July) was indicated in the quality of apple foliage as food for L. subjuncta larvae.