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 ?
The increasing of pest population in the control plot presumably related to migration of bagworm larvae through 'ballooning' process from neighbouring untreated palm.
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.
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.
On my fiftieth birthday I awoke In a Holiday Inn just east of Winchester, Virginia, The companionable summer rain stitching the countryside Like bagworms inside its slick cocoon: The memory of tomorrow is yesterday's story line: I ate breakfast and headed south, the Shenandoah Zigzagging in its small faith Under the Lee Highway and Interstate 81, First on my left side, then on my right, Sluggish and underfed, the absences in the heart Silent as sparrows in the spinning rain.
Teachers might well be squeamish but youngsters loved the close-up photos of clothes' moths and their larvae, carpet beetles, spiders, mice, book lice, plaster bagworms, furniture beetles et al.
Biologies and parasite complexes of two bagworms, Eumeta japonica and Eumeta minucula (Lepidoptera, Psychidae) in Japan.
Foraging can cause more damage, and it means that the building is infested with insects, usually carpenter bees, leaf-cutter bees, or grass bagworms.
Evergreen bagworms (Thyridopteryx epherneraeformis (Haworth) continued to be quite prevalent around the state during 2005, as they have been during the last 2-3 years.
Evidence for mate choice by male bagworms, Oiheticus hirbyi (Guilding) (Lepidoptera: Psychidae).
In most areas, bagworms will have been out for some time on evergreen trees and shrubs.
PEST PROBLEMS: Bagworms, Juniper twig blight, scale insects, spider mites.