Pest Activity -- May 3, 2002

Pest Activity > Pest Activity Archives > May 3, 2002

Welcome to the Woody Ornamental Pest Scouting Report for Western Pennsylvania for May 3, 2002, 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 1, the following growing degree days with a base temperature of 50 degrees have accumulated:

Uniontown	295	Franklin	238
New Stanton	263	Meadville	199
Pittsburgh	286	Erie	179
Wexford	230	Fairview	139
Prospect	197	Harbor Creek	123
Mercer	187

Adult Native Holly Leafminers were observed laying eggs in the leaves of Ilex opaca, American Holly in the City of Pittsburgh this week.

Young aphids were observed on River Birch this past week in Westmoreland County.

Spruce Spider Mites are active in Allegheny County and to the south at this time.

Baldcypress Rust Mites continue to be active in western Pennsylvania.

The nymphs of both Honeylocust Plant Bugs and adult Honeylocust Spider Mite were observed on the new growth of honeylocust this past week in Westmoreland County.

Birch Leafminers larvae were observed in Sewickley and the City of Pittsburgh this past week.

Boxwood Psyllid nymphs continue to feed on boxwoods. The nymphs should be developing into adults very soon in the City of Pittsburgh and to the south. The feeding activity of this pest causes the cupping of the terminal leaves on boxwoods and treatment should be applied now before the nymphs become adults

Pine Spittlebug nymphs can be found on white and Scotch pines at this time.

Southern Red Mites are active on Japanese Hollies at this time.

Eastern Tent Caterpillar are active with tents up to 6 inches wide and larvae up to 1/2" long at this time in Allegheny County..

European Pine Sawfly larvae are active and 1/2 inch long at this time in Westmoreland County.

Spruce Rust Mites and Hemlock Rust Mites remain active on Spruce and Hemlocks in Western Pennsylvania at this time.

Cooley Spruce Gall Adelgid in Westmoreland County are covered with white waxy strands, and have begun egg laying at this time, closing the window opportunity for control.

 

The next scouting report will be on Friday, May 10th.