
Spruce budworms and relatives are a group of closely related insects in the genus Choristoneura. Most are serious pests of conifers. There are nearly forty Choristoneura species, and even more subspecies, or forms, with a complexity of variation among populations found throughout much of the United States and Canada, and about again this number in...
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http://en.wikipedia.org/wiki/Spruce_Budworm

(from the article `lepidopteran`) ...family large and diverse; most larvae are stem borers or leaf rollers or feed in leaf litter; larvae of the green leaf roller of Europe (Tortrix ... ...species (e.g., those of Archips, Cacoecia) are gregarious, congregating and constructing large communal nests of silk, twigs, and leaves. The ... ...
Found on
http://www.britannica.com/eb/a-z/s/145
No exact match found.