Illinois Field Crop Applicators Practice Test

Name the pest that is green-brown with orange stripes and up to 1.5 inches long.

1. Armyworm larvae

2. Stalk borer

3. Webworm

4. Cutworm

The correct answer is: Armyworm larvae

The pest described as green-brown with orange stripes and measuring up to 1.5 inches long is commonly recognized as the armyworm larvae. This identification is based on the distinctive coloration and size. Armyworm larvae typically exhibit a green-brown coloration with noticeable stripes along their bodies, making them identifiable in fields. They are known for causing significant damage to a variety of crops by feeding on leaves and can quickly increase in population, leading to more extensive crop issues. The other pests listed do not match the description as closely. Stalk borers, for example, tend to have a different body shape and do not have the characteristic orange stripes. Webworms can be differentiated by their silk webs and feeding habits, while cutworms, while sometimes having a similar coloration, typically do not have the prominent stripes that characterize armyworms. This alignment of physical characteristics with the description provided leads to identifying armyworm larvae as the correct answer.