Author： MASSEY CALVIN L.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.54, Iss.3, 1961-05, pp. : 354-359
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Abstract
This species is associated with 60% of the insectcaused losses annually in the ponderosa pine type in Arizona and New Mexico. There it has three generations a year. It flies and attacks green trees from early May to October, most intensely in late July and early August; its development from egg through adult requires 50 to 60 days in the summer months. Invariably it attacks the lower parts of the host bole after the tops have been killed by Ips sp. The egg galleries are like those of the western pine beetle. In 1957 about 13% of the total emergence was parent adults;; the habits of the reemerging adults are not known. Its most important predator is the ostomid beetle Temnochila vircscens; woodpeckers consume large numbers, but only during the winter months. A 2% emulsion of DDT was found effective in protecting green ponderosa pine against D. barberi.
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