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Caterpillar The moths pose an increasing nuisance to humans as their range is extended. [ 6 ] The backs of older caterpillars (3rd to 6th instars ) are covered with up to 63,000 pointed defensive bristles, [ citation needed ] sized between 0.2 and 0.3 millimeters, which contain an urticating toxin, the protein thaumetopoein . [ 7 ]
Mythimna separata, the northern armyworm, oriental armyworm or rice ear-cutting caterpillar, is a moth of the family Noctuidae. It is found in China, Japan, South-east Asia, India, eastern Australia, New Zealand, and some Pacific islands. It is one of the major pests of maize in Asia. [1] The species was first described by Francis Walker in 1865.
The hackberry leaf roller caterpillar is the main cause of damage to hackberry trees and their leaves, Fox said. The small and thin caterpillars will be enclosed in a thin network of sticky webbing.
The gypsy moth caterpillar has been reported to produce a poison ivy like rash when some people come into contact with the hairs of the larvae (caterpillar) stage. The contact can be direct or even indirect, if the small hairs are carried by the wind and onto the skin or clothing of a person.
The adult is a stout furry moth which holds its wings like a tent over the body, in the manner of the eggar moths (Lasiocampidae).The adult is larger than the oak processionary, Thaumetopoea processionea, has a crescent marking on the wings (unlike the pale eggar moth; the oak processionary has an indistinct marking), and is found in coniferous rather than broad-leaved forests.
The caterpillar is a serious pest that attacks more than 30 crops. The larva bores into the trunk or branches about 15–25 cm deep. The tunnel created is empty in the day time, but is filled with caterpillar during the night. It damages the bark of the tree resulting in dieback of the stem. Frass is visible in affected areas. [4]
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The caterpillar bores through the fruit until it reaches the seminal chamber of the fruit. There, the caterpillar bites into the seeds and halts the growth of the fruit. The fruit ripens prematurely as a result. By doing so, the caterpillar gains beneficial resources, such as albumin and fat. Such feeding behavior lasts for 23 to 27 days and ...