Woody Pests Home Page UNL Entomology Home Page Nebraska Pesticide Selection Guide Host Plant List Pest List Pest Calendar Leaf Damage Diagnostics Beneficial Arthropods Feedback Form Insects & Mites Attacking Woody Ornamentals MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER MARCH EARLY MID LATE Aphids in Pines (Eggs) Aphids in Pines (Eggs) Aphids in Pines (Egg Hatch) Hackberry Nipplegall Psyllid (Adults) Spring Cankerworm Moths Tent Caterpillar (Egg Hatch) University of Nebraska Cooperative Extension educational programs abide with the non-discrimination policies of the University of Nebraska-Lincoln and the United States Department of Agriculture.