Pest Activity -- May 12

Pest Activity > May 12

Welcome to the Woody Ornamental Pest Scouting Report for Western Pennsylvania brought to you by Penn State Cooperative Extension. This message will be updated weekly with growing degree day counts and insect activity through the end of June. If you would like an email copy of this report, send your request to mcm2@psu.edu.

As of May 11, the following growing degree days with a base temperature of 50 degrees have accumulated.

Uniontown	336	Mercer
New Stanton	238	Franklin
Pittsburgh	267	Meadville
Wexford	***	Erie
Butler	212	Harbor Creek

Pest Activity

Azalea Lace Bug

	Azalea lace bug nymphs are feeding on the undersides of azalea and rhododendron leaves at this time.
Fact Sheet

Boxwood Psyllid

	Boxwood psyllid nymphs remain active in Pittsburgh this week
Fact Sheet

Eastern Tent Caterpillar

	The tents are 8-10 " across and the larvae are 5/8" - 3/4 " long at this time in Pittsburgh.
Fact Sheet

Hemlock Rust Mite

	Hemlock rust mites remain active at this time.
Fact Sheet

Honeylocust Plant Bug

	Honeylocust plant bug nymphs are feeding on honeylocust at this time.
Fact Sheet

Pine Needle Scale

	Pine Needle scale eggs have started to hatch but the young crawlers are still found under the female's white cover.
Fact Sheet

Spruce Spider Mites

	Spruce spider mites are active in Pittsburgh at this time.
Fact Sheet

Adult Elm leafminers were seen in Pittsburgh this past week. The Native Holly Leafminer should be out soon as well as Euonymous Scale crawlers.

The next scouting report will be on May 20 .