Azalea Leafminer (Caloptilia azaleella) GDD Window (base 50): 450-800 (1st gen)/1260-1500 (2nd gen) Overview: Symptoms are often subtle and overlooked Early instar stages are leafminers, while the later instar stages are leafrollers … Read More
Inner Needle Discoloration of Spruce (Picea spp.) Overview: Host plants: most common on White and Colorado spruce species, but sometimes seen on Norway spruce Current needle growth has a blue-green color, … Read More
Dogwood Sawfly (Macremphytus tarsatus) GDD Window (base 50): 1151-1500 Overview: Adults are slender, shiny, black, wasp insects & emerge May to July Females insert up to 100 eggs into a leaf using an … Read More
Nantucket Pine Tip Moth (Rhyacionia frustrana) GDD Window (base 50): 121-448 (1st gen larvae)/1514-1917 (2nd gen larvae) Overview: Caterpillar pest that overwinters as brown-colored pupae within branch tips On small … Read More
Two-Banded Japanese Weevil (Pseudocneorhinus bifasciatus) GDD Window (base 50): 1644-2271 (adults) Overview: Adults are 3/16” long, round, and brown to gray with two dark bands across the wing covers … Read More
Minute Pirate Bug (Orius tristicolor) Overview: This predator is a true bug & all three life stages are smaller than 0.2” in length Adults are oval-shaped, black, and sometimes … Read More
Tulip Tree Aphid (Illinoia liriodendri) GDD Window (base 50): 1151-1514, 1917-2033 Overview: Wingless aphids are 1/8” long, spindle-shaped, and pale greenish-yellow or pinkish-red, with black antennae that are longer than … Read More
Taxus Mealybug (Dysmicoccus wistariae) GDD Window (base 50): 246-618 Overview: Considered a type of scale insect Overwinter as 1st instar nymphs (soft scales overwinter as 2nd instar nymphs) Adults are 1/8″ long and covered with white cottony waxy filaments that makes them difficult to control White adults … Read More
Honeylocust Spider Mite (Platytetranychus multidigituli) GDD Window (base 50): 220-250 (egg hatch) Overview: Orangish and yellow-green, overwintering adults are1/50” and found in bud scars and bark cracks Classified as a warm season … Read More
Maple Spider Mites (Acer rubrum) GDD Window (base 50): variable Overview: Overwinter in bark crevices as adults and eggs Some also seek refuge under dead armored scale insects Migrate to the underside of the leaves in … Read More