Chrysoperla spp.
Overview
Chrysoperla species, commonly known as green lacewings, are among the most widely recognised beneficial insects used in biological control. Their larvae are voracious predators of aphids and many other soft-bodied pests and are often referred to as "aphid lions".
While adults mainly feed on nectar, pollen and honeydew, the larval stage provides most of the pest control activity.
Type
Predatory lacewing.
Target Pests
Primary Targets
- Aphids
Secondary Targets
- Whitefly
- Mealybugs
- Thrips
- Small caterpillars
- Spider mite colonies
Identification
Adults are delicate green insects with transparent lace-like wings and golden eyes.
Larvae are elongated, grey-brown predators with prominent jaws used to capture prey.
Eggs are laid individually on the end of thin stalks.
Why Chrysoperla is Important
Lacewing larvae consume large numbers of aphids and can rapidly reduce established pest colonies.
Unlike many specialist biological control agents, they feed on a broad range of pests.
Strengths
- Broad prey range
- Excellent aphid predator
- Strong curative potential
- Useful indoors and outdoors
- Highly recognisable beneficial insect
Limitations
- Adults provide little direct pest control
- Requires prey availability
- Less preventative than parasitoids
Monitoring Establishment
Look for:
- Larvae within aphid colonies
- Eggs on stalks
- Reduced aphid colony growth
- Active predation
Common Questions
Why are they called aphid lions?
The larvae are aggressive predators capable of consuming large numbers of aphids.
Do adults eat aphids?
Adults mainly feed on pollen, nectar and honeydew.
Can they control mealybugs?
They may contribute to suppression but are primarily used for aphids.