Thistle Caterpillar, Vanessa cardui.
Soybean leaves may be webbed together by this hairy caterpillar (also known as the painted lady caterpillar). Larvae are covered by branched black spines or hairs over much of the body. Treat if 10 or more caterpillars are found per foot of row, or where defoliation becomes severe (greater than 25 to 35 percent) during pod set.
Please refer to the most recent version of the Soybean Insect Management Guide for control options.
Page last updated 11/01/2013 by J.P. Michaud.