. A manual of dangerous insects likely to be introduced in the United States through importations. , the greasy cutworm, are practically cos-mopolitan. A discussion of most of the injurious species will be found in SorauersHandbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 348-374. WEEVILS. RHYNCHOPHORA—COLEOPTERA. The experience of the last few years m the quarantine of horticul-tural products has shown that one of the groups most likely to intro-duction is the group of weevils which comprise a large section of theorder Coleoptera. Owing to the development of many species of weevils
. A manual of dangerous insects likely to be introduced in the United States through importations. , the greasy cutworm, are practically cos-mopolitan. A discussion of most of the injurious species will be found in SorauersHandbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 348-374. WEEVILS. RHYNCHOPHORA—COLEOPTERA. The experience of the last few years m the quarantine of horticul-tural products has shown that one of the groups most likely to intro-duction is the group of weevils which comprise a large section of theorder Coleoptera. Owing to the development of many species of weevils in the roots,stems, and fruit of almost every type of plant known, it is very easyto introduce them in immature stages in such a manner that they maytake hold and attack the introduced plant. Owing to the necessityof determining practically all of the weevils introduced by a searchthrough foreign literature a majority of the species so far introduced iTech. Sferies 17, part II, Bureau of Entomology, U. S. Dept. of Agric, 1915. U. S. Dept. of Agriculture, Manual of Dangerous Insects. Plate
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