. Cooperative economic insect report. Beneficial insects; Insect pests. - 510 DISTRIBUTION OF SOUTHERN PINE BEETLE (Dendroctoaus frontalis Zimm.) IN THE UNITED STATES. NOTE: Shaded parts indicate known outbreak areas occurring since 1948. Dashed line denotes the range of the beetle. From Forest Pest Leaflet 49, October 1960. Forest Service, U. S. Dept. of Agriculture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United S
. Cooperative economic insect report. Beneficial insects; Insect pests. - 510 DISTRIBUTION OF SOUTHERN PINE BEETLE (Dendroctoaus frontalis Zimm.) IN THE UNITED STATES. NOTE: Shaded parts indicate known outbreak areas occurring since 1948. Dashed line denotes the range of the beetle. From Forest Pest Leaflet 49, October 1960. Forest Service, U. S. Dept. of Agriculture. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
