bagworm


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bagworm,

common name for the larva of small moths of the family Psychidae. The larva spins a silken cocoon as it travels, hence the term bagworm. When fully grown, the bagworm fastens its covering to a twig and pupates within it. Some species weave bits of leaves or twigs into their bags. During mating season the wingless, footless adult female perforates the lower end of the bag, protrudes her abdomen for breeding, and soon after laying about a thousand overwintering eggs in the bag, dies. The larvae develop slowly, requiring several months to reach maturity. Bagworms prefer arborvitae and juniper trees, but practically all trees are attacked. The best known of these small moths is Thyridopteryx ephemeraeformis, occurring throughout the E United States and regions adjacent to the Gulf of Mexico. Control of the pests is through use of insecticides or by handpicking the cocoons before the eggs hatch at the end of May. Bagworms are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Lepidoptera, family Psychidae.
References in periodicals archive ?
Bagworms can be real pests in areas of the United States.
In the untreated plot, the bagworm increased tremendously up to 14 DAT.
(2006) (1S)-1-Ethyl-2-methylpropyl 3,13-dimethylpentadecanoate: major sex pheromone component of Paulownia bagworm, Clania variegata.
When bagworm larvae crawl from one host species to another, the fragments of foliage attached to their bags remain as testimony to the previous host species.
Natural enemies of the bagworm, Metisa plana Walker (Lepidoptera: Psychidae) and their impact on host population regulation.
PEST PROBLEMS: Twig blight, bagworm. Not usually bothered.
Trunk injection of systemic insecticides against the bagworm, Metisa plana (Lepidoptera: Psychidae) on oil palm.
A bagworm Oiketicus sp., the most common species en countered in our survey, was reported as a pest in other crops including banana (Musa sp.; Zingiberales: Musaceae), cacao (Theobroma cacao L.; Malvales: Malvaceae), citrus (Citrus sp.; Sapindales: Rutaceae), and palm (Elaeis sp.; Arecales: Arecaeae) (Mexzon et al., 2003).
Dispersal by bagworm larvae, Metisa plana: effects of population density, larval sex, and host plant attributes.
The tree is relatively pest-resistant thanks to its fragrant wood and foliage, though it's susceptible to bagworms, which can be picked off by hand or treated with Bacillus thuringiensis (Bt).
"It was a dream we came up with." This was no walk in the park--the Riesetts had to learn about tree diseases, fungi and bagworms, which they had to pick off of trees by hand.