Opogona crown borer—Opogona omoscopa
Opogona crown borer (family Tineidae) is an uncommon pest. As larvae, it primarily feeds on various types of decaying vegetation and can also feed on the base of some plants.
Identification
Adults are mottled brown or beige moths about 1/3 inch long with a wingspan of about 3/4 inch. Larvae are grayish with a dark head and when mature, about 3/4 inch long.
Life cycle
Opogona crown borer develops through four life stages: egg, larva, pupa, and adult.
Damage
Bird of paradise and strawberries are the most commonly infested plants in California. Larvae of Opogona crown borer occasionally chew and tunnel in the crown (basal stem) of these and other plants. Larval feeding causes foliage to turn yellow, wilt, and die and can lead to decay of the plant base and plant death.
Solutions
Avoid wounding plants, especially around the base. Provide plants with a good growing environment and appropriate cultural care so they grow vigorously and are more tolerant of pest damage. Avoid overwatering. Remove and dispose of plant debris and dying plants.
Adapted from Pests of Landscape Trees and Shrubs: An Integrated Pest Management Guide, University of California Statewide Integrated Pest Management Program (UC IPM).
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