Helicoverpa (= Heliothis) zea
The corn earworm/tomato fruitworm can feed on many different plants; however, the most commonly damaged are corn and tomatoes. The species has been given many different common names, including cotton bollworm, soybean podworm, and so on. These pests are also known to consume tobacco, legumes, grain sorghum, and other vegetables and fruits.
Found throughout North America.
Adult moths are usually light yellowish olive to tannish brown, with a single dark spot near the center of each front wing. The wingspan is about 1 1/2 inches. The larvae come in a wide variety of colors, including shades of pink, yellow, green, brown, and black. The color is derived to some extent from the host plant. They usually have darker or lighter stripes running lengthwise on the body. Eggs are small, round, and almost transparent white.
Earworms overwinter as pupae in the top several inches of soil. First-generation adults begin to emerge from late March to May, dependent on geography and climate. The population may be augmented by migrating moths from other regions. After mating, eggs are laid on the buds or fruit of host plants. Eggs hatch in less than 5 days. Larvae feed for 2 to 4 weeks before dropping to the ground to burrow into the soil to pupate. They prefer buds or fruit but will also feed on the leaves of many different plants. There are one to four generations per year.
USGS Bee Inventory, Judy Gallagher, Flickr, Jean Faucett, Marcos Cesar Campis, Jean Faucett, Shutterstock
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