The Warren's Root Collar Weevil attacks young conifer trees about 6 to 8 years old. It prefers both pine and spruce trees. Plantations or natural stands that are moist sites with thicker duff layers are the preferred site conditions for attack. The duff layer refers to the decomposed leaves and needles, as well as the fine twigs, and other organic material that is found between the mineral soil surface and the more recent litter layer.
The latin name for the Warren's Root Collar Weevil is Hylobius warreni.
The weevil tunnels into the tree at the root collar, effectively girdling the tree. Trees that have been attacked exhibit yellowish green and/or red needles, and the tree may also be leaning to one side. They are very easily pushed over by hand.
For more information on the Warren's Root Collar weevil a handy field reference guide can be found here:https://www2.gov.bc.ca/assets/gov/farming-natural-resources-and-industry/forestry/forest-health/forest-health-docs/field_guide_to_forest_damage_in_bc_web.pdf North 53 38.996 West 122 58.167
All hides for this Spruce Geo Art Series are camoed pill bottles or bison tubes. Each container contains a logsheet sealed in a tiny zip lock bag. Please bring your own pencil. This cache is not hidden at the posted coordinates, however all the information you need is on this cache page.
Photo Credit: Warren's Root Collar Weevil image from the Field Guide to Forest Damage in British Columbia Joint Report No. 17 - Manastyrski, D. of Natural Exposures Photography and Imaging: Figure 119 page 78.
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