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It’s Bagworm Time
The bagworm. Thyridopteryx ephemeraeformis, is an unusual and serious defoliating pest of marry ornamental trees and shrubs. It receives its name from the bag-like structure constructed from leaf fragments that are bound together with silk produced by the larva, which looks like a small pine cone. Most of the insect's life is spent within the bag. which serves as a protective structure. Bagworms feed on more that 125 species of trees, and conifers, especa'ly arborvitae. jumper, cedar, Leytand cypress and white pine are preferred hosts. The presence of the spindle-shaped bag structures is the principal evidence of a bagworm infestation. The bagworm overwinters as yellowish eggs within the bag.
Larvae emerge and begin feeding in mid-June and begin constructing new bags. In earty-July through early August, fully-grown larvae secure their bags to a twig with silk and pupate within the bag. Male moths emerge in about one month and fly to a bag containing a female, and mating occurs. Eggs are deposited within the bag. with one generation occurring each year.
Bagworms can cause severe damage and defoliation to many evergreen and deciduous tree species. As your local Bartlett representative. I can help maintain the health of your trees, so if you have any questions, please contact me at jwood@bartlett.com or 1-877-Bartlett.
BARTLETT
TREE EXPERTS
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