Green lacewing (Chrysoperla carnea)

Green lacewing predator of aphids





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Identification card icon Identification

Chrysoperla carnea, commonly called green lacewing or aphid lion, is a small insect native to Canada, belonging to the Neuroptera family.

Adults are delicate insects, 2 cm long. They are pale green, with translucent oval wings and long antennae. The eggs are laid on plants, generally near aphid colonies. Each egg is attached to a thin stem (pedicel) 1 cm long. The larvae are predatory, with strong mandibles (mouthparts) that enables them to seize their prey.

Adults are active at dusk and feed on pollen, flower nectar and aphid honeydew. Their larvae on the other hand feed on thrips, whiteflies, moths, beetles, eggs, small larvae, mealy bugs, psyllids, and mites. These little monsters have large hollow hooked jaws that pierce into the prey on contact and secrete digestive enzymes that melts it into its exoskeleton, sucking up the prey’s body juice.

The number of lacewings needed for effective control depends on the pest population and climatic conditions.These insects are extremely effective under certain conditions, especially in protected or enclosed areas such as a greenhouse.

  • Cannabis
  • Ornemental crops
  • Cucumbers
  • Peppers

  • Aphids
  • Whiteflies
  • Thrips
  • Soft-bodied insects (caterpillars and nymphs)
  • invertebrate eggs

  • The life cycle varies with temperature (4 weeks to 3 months).
  • The optimum conditions are a temperature of 20 ° C to 31 ° C and a relative humidity of 70%.
  • The eggs are laid on plants, generally near aphid colonies.
  • The females lay their eggs on the leaves near aphid colonies.
  • Larvae emerge from the eggs after 3 to 6 days.
  • One larva can consume 100 to 600 aphids during its development.
  • The larval stage lasts 15 to 20 days.
  • Pupation occurs on a leaf, the larvae built a small white cocoon hairy. Adults emerge from the cocoon after 10 to 14 days.

Bottle

Bottle containing Green Lacewing larvae

A bottle containing Green Lacewing larvae in sterilized buckwheat shells and Ephestia eggs (as transport food)

Box

Box containing many Jute sheets with green lacewing eggs on it

A box containing many Jute sheets with green lacewing eggs on it. The eggs hatch a few days later.

Application rate

Green lacewing | Larval stage
Introduction Quantity Surface Frequency Duration
Low infestation 10 larvae per m 2 per 14 days as needed
Hot spot 50 larvae per m 2 per 7 days as needed
Green lacewing | Egg stage
Introduction Quantity Surface Frequency Duration
Low infestation 50 eggs per m 2 as needed as needed

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Drapeau du Canadawe deliver to canada onlyDrapeau du Canada

  • Fiche signalitique
    Green Lacewing (Chrysoperla carnea) Larvae
  • Fiche signalitique
    Green Lacewing (Chrysoperla carnea ) eggs

  1.   - Lacewing larvae eating aphids
  2.   - Biological Control - Common Green Lacewing (= C. carnea) - Cornell University
  3.   - Know Your Friends - Green Lacewings - University of Wisconsin
  4.   - Chrysopid Predators and their Role in Biological Control - Journal of Entomology Volume 8 (3): 301-326, 2011
  5.   - Lacewings - Ontario Apple IPM - OMAFRA

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Biological control products and beneficial insects for farmers and greenhouse growers