Category:Dendroctonus galleries in wood

Media in category "Dendroctonus galleries in wood"

The following 20 files are in this category, out of 20 total.

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  1920. Western pine beetle (Dendroctonus brevicomis) galleries in Pinus ponderosa. Sierra National Forest, California. (35548507043).jpg 1,973 × 1,320; 761 KB
  
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  1923. Tree infested with Dendroctonus brevicomis almost stripped of bark by woodpeckers in their hunt for larvae. Southern Oregon Northern California (SONC) western pine beetle control project. (33607501125).jpg 1,249 × 1,969; 503 KB
  
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  1926. Dendroctonus brevicomis work on the surface of sapwood. (26199472999).jpg 1,174 × 1,810; 449 KB
  
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  1926. Dendroctonus brevicomis work on the surface of sapwood. (38221528611).jpg 1,450 × 2,222; 372 KB
  
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  1932. Ground cage on ponderosa pine Dendroctonus brevicomis Lec. brood trees. Prineville, Oregon. (26174521048).jpg 939 × 1,300; 237 KB
  
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  1934. Drawing by de Young shows the brood stages, work, and life history of the western pine beetle, Dendroctonus brevicomis Lec. (33684967476).jpg 1,391 × 1,988; 409 KB
  
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  1934. Three relative degrees of Dendroctonus brevicomis attack; heavy, medium, and light on ponderosa pine. (39817485915).jpg 1,622 × 1,084; 407 KB
  
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  1953. Douglas-fir beetle (Dendroctonus pseudotsugae). Typical etching of log by galleries. Completeness of larval mines indicates a highly successful brood. North Fork Willamette River. Oakridge, Oregon. (26245442338).jpg 1,034 × 1,337; 294 KB
  
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  1956. Dendroctonus monticolae egg galleries and larval mines on wood surface of Pinus monticola. (34029290034).jpg 1,040 × 1,336; 274 KB
  
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  1957. Ken H. Wright examines Douglas-fir bark beetle galleries on right-of-way logs. Coos County, Oregon. (33080301780).jpg 1,437 × 1,116; 302 KB
  
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  1959. Norman E. Johnson sampling large Douglas-fir old-growth windfall for Douglas-fir beetle broods. McDonald Tree Farm. Lewis County, Washington. (33429380481).jpg 4,848 × 3,901; 2.22 MB
  
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  1969. Douglas-fir beetle damage in cull logs. Gifford Pinchot National Forest, Washington. (37004668962).jpg 2,350 × 3,599; 4.59 MB
  
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  Bark Beetles- Dendroctonus - All States - DPLA - 0c600eab5c4288f537ab52f004fc9dd6.jpg 4,860 × 3,972; 2.65 MB
  
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  C.1967. Aborted mountain pine beetle egg gallery in bark treated with cacodylic acid silvicide. (41850638282).jpg 4,737 × 2,897; 2.57 MB
  
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  Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904 (1904) (14597243990).jpg 1,484 × 2,900; 761 KB
  
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  Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904 (1904) (14760954296).jpg 1,724 × 3,288; 1.24 MB
  
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  Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904 (1904) (14783597432).jpg 1,608 × 2,992; 541 KB
  
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  Insect enemies of the spruce in the Northeast - a popular account of results of special investigations, with recommendations for preventing losses (1901) (14585001528).jpg 1,716 × 3,292; 2.79 MB
  
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  Insect enemies of the spruce in the Northeast - a popular account of results of special investigations, with recommendations for preventing losses (1901) (14585167907).jpg 1,480 × 2,912; 1.82 MB
  
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  MPB Gallery.jpg 1,536 × 1,024; 369 KB