Canadian Forest Service Publications
A deathwatch cone beetle (Anobiidae: Ernoblus bicolor) reduces the natural storage of black spruce seed in Newfoundland. 1983. Schooley, H.O. Forestry Chronicle June: 139-142.
Issued by: Northern Forestry Centre
Catalog ID: 23530
The biology of a newly discovered deathwatch beetle that infests one-year-old and older black spruce Picea mariana B.S.P. cones is described. This pest reduces the amount of seed retained in the cones that persist on the trees for many years. Up to 50% of a cone crop at a location may be damaged and annual damage between 1963 and 1979 averaged up to 18% for samples from 33 locations. Undamaged cones may not retain enough seed to naturally re-establish stands following harvest or fire. Substantial seed losses were observed when infested cones were harvested for seed extraction. This cone beetle has been recorded only from Newfoundland.