File:Conifer.Ambrosia Beetle frass

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Frass caused by Conifer ambrosia beetles, Xyloterus lineatus (Oliv.) of a Norway spruce, Picea abies (L.) Karst. Image Credit: Beat Forster, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL),

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current12:19, 24 July 2013Thumbnail for version as of 12:19, 24 July 20131,200 × 800 (167 KB)Maintenance script (talk)Importing image file
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