Gypsy moth caterpillar

Tree Preservation gypsy moths, caterpillars, borers, leaf miners, mites wounds from pmning or other damage to bark... 

Disparlure, the sex pheromone of the female gypsy moth, has been used to control the spread of the gypsy moth caterpillar, a pest that has periodically devastated forests in the northeastern United States by defoliating many shade and fruit-bearing trees.The active pheromone is placed in a trap containing a poison or sticky substance, and the male moth is lured to the trap by the pheromone. Such a species-specific method presents a new way of controlling an insect population that avoids the widespread use of harmful, nonspecific pesticides. Disparlure is synthesized by oxidation of an alkene using chemistry presented in Chapter 12. 

In 1869, the gypsy moth was introduced into New England in an attempt to develop a silk industry. Some moths escapred into the wild and the population flourished. Mature gypsy moth caterpillars eat an average of one square foot of leaf surface per day, defoliating shade trees and entire forests. Many trees die after a single defoliation. 

Several other caterpillars, including gypsy moths, loopers, and tent caterpillars, feed on beeches. See Leaves skeletonized or with laige holes branches may be webbed and Plant defoliated on page 236 for more information and controls. 

Leaves skeletonized or with large holes branches may be webbed. Cause Caterpillars. ebworms can be a serious problem on honey ocust. Some cultivars, such as Moraine , show >3me resistance to webworm damage. For other control information, see Leaves skeletonized with large holes branches may be webbed". n page 236. Gypsy moths also feed on leaves, - ut they don t form webs. See Plant defoliated" on page 236 for controls. 

Plant defoliated. Cause Gypsy moths. Gypsy moth larvae are up to 2 /i" long, gray-brown, hairy caterpillars with red and blue spots on their backs. Unlike tent caterpillars and webworms, gypsy moth larvae do not make webs. 

Beneficial Effect Excellent predators of many caterpillar pests, including cutworms, armyworms, tent caterpillars, cabbage loopers, and gypsy moth larvae some also attack sawflies. squash bugs, and stink bugs. 

Protection Offered Use bands to protect trees, vines, and shrubs from ants, codling moth and gypsy moth caterpillars, cutworms, leaf beetles, snails and slugs, and other pests that make daily trips along the trunk. 

Many baculoviruses126 (i.e., insect viruses) are species-specific. They have been used for the successful control of the gypsy moth, velvet bean caterpillar (on 5.9 million ha of soybeans in Brazil), cotton bollworm, codling moth (on apples, pears, and walnuts), rhinoceros beetle, potato tuber moth, sawflies, and porina moth.127 The gypsy moth was introduced into the United States in Massachusetts from Europe in 1869. It defoliates many trees if there are no checks on its population. The war against it has often used diflubenzuron ( dimilin1 ) (11.20), which affects many nontarget species.128... 

CTs can be effective anti-nutrients against insects, especially at high concentrations as can be found in P. tremuloides (up to 18 % DW). ° Tannin effectiveness and mechanism of action has been debated, but it clearly depends both on variations in chemical structure and plant source, as well as on the biochemical conditions in the gut of the particular insect species. In P. tremuloides, CT levels were shown to be negatively correlated with gypsy moth and forest tent caterpillar larvae performance, although the effects were smaller than with the phenolic glycosides (C. P. Constabel and J. Spence, unpublished data). ... 

HWANG, S.Y., LINDROTH, R.L., Clonal variation in foliar chemistry of aspen Effects on gypsy moths and forest tent caterpillars, Oecologia, 1997, 111, 99-108. 

Gypsy Moth and Forest Tent Caterpillar Bioassays... 

A wasp lays Its eggs on a gypsy moth caterpillar on the leaf of a corn plant. 

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