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USDA Forest Service

USDA Forest Service

The U.S. Department of Agriculture Forest Service is a Federal agency that manages public lands in national forests and grasslands. The Forest Service is also the largest forestry research organization in the world, and provides technical and financial assistance to state and private forestry agencies. Gifford Pinchot, the first Chief of the Forest Service, summed up the purpose of the Forest Service—"to provide the greatest amount of good for the greatest amount of people in the long run."
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43 Images of 7 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
5485677 hemlock woolly adelgid Adelges tsugae Hemlock mortality caused by Hemlock Woolly Adelgid (Adelges tsugae). 
5488009 hemlock woolly adelgid Adelges tsugae
5476127 hemlock woolly adelgid Adelges tsugae
1593005 eastern spruce gall adelgid Adelges abietis Odler galls caused by eastern spruce gall adelgid
1593049 pine bark adelgid Pineus strobi Main stem coated with cottony-like pine bark adelgids.
2254012 cooley spruce gall adelgid Adelges cooleyi mass
1398221 pine bark adelgid Pineus strobi White coated bark on a pole-sized white pine. Waushara County, WI
1199030 pine bark adelgid Pineus strobi
1199029 pine bark adelgid Pineus strobi Pine bark adelgid infestation on the bark of an eastern white pine
1241748 balsam woolly adelgid Adelges piceae
1398224 pine bark adelgid Pineus strobi Whitewashed appearance on a heavily infested stem. Waushara County, Wisconsin
1398223 pine bark adelgid Pineus strobi White cottony masses on the bark
0795076 balsam woolly adelgid Adelges piceae
1587167 cooley spruce gall adelgid Adelges cooleyi
0488049 balsam woolly adelgid Adelges piceae
0795084 pine bark adelgid Pineus strobi on white pine
1396092 pine bark adelgid Pineus strobi
0590098 balsam woolly adelgid Adelges piceae stand mortality at Mt. Mitchell
1587068 balsam woolly adelgid Adelges piceae
1587074 balsam woolly adelgid Adelges piceae abnormal crown
1587075 balsam woolly adelgid Adelges piceae abnormal crown
1587073 balsam woolly adelgid Adelges piceae abnormal crown
1587072 balsam woolly adelgid Adelges piceae abnormal crown
2253020 balsam woolly adelgid Adelges piceae
1520084 hemlock woolly adelgid Adelges tsugae HWA on hemlock needles
1510050 balsam woolly adelgid Adelges piceae Balsam wooly adelgid killed frazier fir
1510053 balsam woolly adelgid Adelges piceae Balsam wooly adelgid infested fir bole
0355019 spruce gall aphids Adelges spp. thinning crowns
2254044 cooley spruce gall adelgid Adelges cooleyi
5050027 cooley spruce gall adelgid Adelges cooleyi
2182032 spruce gall adelgid Pineus similis
2181085 balsam woolly adelgid Adelges piceae
2182014 pine bark adelgid Pineus strobi
2182015 pine bark adelgid Pineus strobi
1468263 cooley spruce gall adelgid Adelges cooleyi
1396093 pine bark adelgid Pineus strobi
1396091 pine bark adelgid Pineus strobi
1276002 hemlock woolly adelgid Adelges tsugae Adult and eggs inside an ovisac
1276004 hemlock woolly adelgid Adelges tsugae Recently infested
1276005 hemlock woolly adelgid Adelges tsugae Tree removal
1748039 balsam woolly adelgid Adelges piceae
1748048 hemlock woolly adelgid Adelges tsugae thinning of crown
0488086 pine bark adelgid Pineus strobi to white pine

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