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Ribbed cocoon maker (Bucculatrix pomifoliella) adults are small (1/10 inch) light-brown moths with a dark spot on each front wing. Early-stage larvae form narrow leaf mines and are greenish-brown. Partially-grown larvae emerge from the leaves to spin a molting cocoon, later emerging again to resume feeding while exposed on leaf surfaces. Pupal cocoons (1/4 inch) will appear longitudinally ribbed and are attached to twigs or fruit. Damage is caused by young larva destroying foliage.

Ribbed cocoon maker.

(Photo: Ricardo Bessin, University of Kentucky)

Ribbed cocoon maker.

(Photo: Ricardo Bessin, University of Kentucky)

Ribbed cocoon maker leaf damage.

(Photo: Ricardo Bessin, University of Kentucky)

Management:

• No sampling procedures or thresholds have been established

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