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Selected images for larger pine shoot beetle (Tomicus piniperda )

There are several Tomicus species that feed on various conifers. Many are familiar with Tomicus piniperda, the common pine shoot beetle, since it was identified near Cleveland, Ohio in 1992. Two other species, T. minor and T. destruens, are not known to be present in the United States. Probable introduction pathways include: unprocessed logs, fire wood, tree trimmings, and lumber with the bark still attached. Pines are the most common host, although T. piniperda may attack fir, larch, or Douglas fir. T. minor has also been reported on larch. Both T. piniperda and T. minor have one generation per year. For T. destruens, two to three overlapping generations per year are suspected; however, current theories suggest they may actually be multiple broods resulting from mated females attacking multiple trees. After mating, females construct egg galleries within the inner bark and outer sapwood. Eggs are pearly white. After hatching, larvae construct feeding galleries. Larvae are white, c-shaped, legless grubs with an amber colored head capsule which may be as long as 1/8 inch when mature. Pupation can occur, in cells, at the end of the larval galleries or in the bark. Pupae are white with some adult features, including rudimentary wings. Adults emerge and feed by boring into tender pine shoots. This feeding may occur as a mass attack on susceptible trees. Attacks are characterized by reddish-brown boring dust on the bark surface of trees and, if relatively vigorous trees are attacked, conspicuous pitch tubes on the bark surface. Reddening or browning of shoots is also common. Adults are darkbrown, elongate and about 3/16 inch in length. The ends of the wing covers bear features to distinguish between the various species. The head is visible, when viewed from above, and has six-segmented red-yellow antennal clubs. Blue stain fungi or other vascular wilts are commonly associated with these beetles.


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2165082
2165082

larger pine shoot beetle
Tomicus piniperda
Feature(s)
Pest and Diseases Image Library
1231203
1231203

larger pine shoot beetle
Tomicus piniperda
Damage
Gyorgy Csoka
1269054
1269054

larger pine shoot beetle
Tomicus piniperda
Galleries
Beat Forster
1292072
1292072

larger pine shoot beetle
Tomicus piniperda
Galleries
Robert Dzwonkowski
2101017
2101017

larger pine shoot beetle
Tomicus piniperda
Damage
Daniel Adam
2165079
2165079

larger pine shoot beetle
Tomicus piniperda
Adult(s)
Pest and Diseases Image Library
1292071
1292071

larger pine shoot beetle
Tomicus piniperda
Adult(s)
Robert Dzwonkowski
2105040
2105040

larger pine shoot beetle
Tomicus piniperda
Adult(s)
Maja Jurc
2165081
2165081

larger pine shoot beetle
Tomicus piniperda
Feature(s)
Pest and Diseases Image Library
2165083
2165083

larger pine shoot beetle
Tomicus piniperda
Feature(s)
Pest and Diseases Image Library
2165085
2165085

larger pine shoot beetle
Tomicus piniperda
Adult(s)
Pest and Diseases Image Library
2165086
2165086

larger pine shoot beetle
Tomicus piniperda
Feature(s)
Pest and Diseases Image Library