IPMP3.0, Oregon State University, Copyright 2000




Fact Sheet (requires Acrobat Reader 3.x or above to read and print. Click below to download the free "Reader".)

Download Acrobat Reader Software

Registered Insecticides


[Insect Management]


Link to large image (93K) of Lady Beetle Adult Link to large image (117K) of Lady Beetle Adult
Lady Beetle Adult Lady Beetle Adult
Link to large image (112K) of Lady Beetle Larva Lady beetles are common in many mint fields. Adults are about 4 mm long, oval and convex shaped, reddish-orange, usually with black spots on the wings. Larvae are gray or bluish-gray, with numerous yellow, white, or red spots. Mature larvae are about 9.5 mm long. Adults overwinter in aggregations in protected areas. Adults disperse to fields in the spring and begin feeding on aphids. Eggs are laid on plants infested with prey. Eggs hatch in 5 to 7 days and larvae begin feeding on prey. Pupation occurs on the plant or in protected areas. Adults emrege about a week later. A complete life cycle requires 4 to 6 weeks. There are several overlapping generations each year.

Lady Beetle Larva

View the Fact Sheet for More Information

This section contains information on the identification of lady beetles.  The Fact Sheet contains specific information on identifcation and biology of this predator (requires Acrobat Reader).