Tuesday, April 2, 2013
I have known about this outbreak for some time now, but was sworn to secrecy until the government agencies could release an official statement. By the way, this tape will self destruct in 5 seconds.
The Hemlock Adelgid produces two broods a year. It remains mostly dormant during the hot summer months. Winter time is when it feeds. Extremely cold winters have knocked back populations in the New England states, but studies also show that warming temperatures and mild winters contribute to its spread. The great thing about this beetle is it too comes out in winter to attack Adelgids. In the previous photo, Scymnus coniferarum is another western native beetle that feeds in summer. Thus we can attack the pest year round.
For permission to use many of these illustrations and photographs, thanks go to
Stephanie Downs-Ohio Division of Forestry
Dave Apsley-Ohio State University Extension Service
Jesse Webster-Smoky Mountain National Park
And for the construction and presentation of the aforementioned powerpoints:
Dr. Curtis Young-Ohio State University
Dave Adkins-Ohio Department of Agriculture
Brad Onken & Bill Oldland-U.S. Forest Service, Morgantown WV
Dr. Richard McDonald-saving hemlocks (a nice YouTube video)