Lady Bird Beetle (Coccinellidae)
Overview:
- Lady bird beetles (Coccinellidae), also known as ladybugs, are beneficial insects that can can alleviate pest problems
- Often considered the first line of defense against many soft bodied pest insects
- Larvae and adults feed on insects, while adults also feed on nectar, pollen,and honeydew – one beetle can eat over 5000 aphids in its lifetime!
- Eggs are tiny, bright yellow-orange, and spindle shaped
- Larvae look different from adults, and are flattened and tapered, up to ¼” long, and dark colored with orange or yellow markings, often with short bristles along the body and three pairs of legs. Larvae move quickly.
- Adults are from ¼-3/8″ long, and round or oval, coming in bright colors ranging from black to pink, yellow, or red, and may or may not have spots on the wings
- Reside on leaf undersides
- Prey pests: aphids, spider mites, scales, whiteflies, leaf beetle larvae, insect eggs, and small caterpillars
Management:
Fostering Beneficial Insect Populations:
- Allow minor populations of soft body pest populations, especially in plants not sold that year
- Avoid broad spectrums wherever possible
- Monitor shaded regions for beneficial predators
Pesticide Impacts/Considerations:
- Insecticides negatively impact ladybird beetles through direct contact and also when they eat prey that has been treated with insecticides
- Some insecticides can have less of an impact on ladybirds
- Emamectin benzoate
- Larvae are more susceptible than adults
- If absolutely necessary, apply insecticides in the late evening or at night to minimize its impact on lady beetles



Disclaimer – Materials do not cover all possible control scenarios and are intended for licensed professionals. Tradenames do not imply endorsement and are used as examples. You must strictly follow the label for each compound prior to use. Rutgers is not responsible form is used materials or damages thereof. The label is the law. Labels will provide detailed information on use and restrictions. Additionally, application intervals, compatibility, surfactant use, PHI, PPE, important and other key information is described in detail. Always discuss treatments with your local agents. Note: Neonicotinoids can only be legally applied in commercial agriculture settings by licensed applicators. Guidelines and recommendations made in this presentation are specific to the state of New Jersey.