Green lacewing

Professional insight: The genus Chrysopa, commonly known as the green lacewing, is not a plant pest but a powerful beneficial predator. These insects are essential components of biological control programs in greenhouses, orchards, and field crops worldwide.

Taxonomically, green lacewings belong to the order Neuroptera and the family Chrysopidae. They are easily identified by their delicate, lace-like wings, bright green bodies, and distinctive golden-colored compound eyes. While adults feed on nectar and pollen, it is their larval stage that is of high agronomic value.

The life cycle of the lacewing involves a complete metamorphosis. A unique characteristic is the way the female deposits her eggs on long, silk stalks; this adaptation protects the eggs from predators and cannibalistic siblings. After hatching, the larvae, often nicknamed "aphid lions," start hunting immediately.

Lacewing larvae are voracious predators known to consume aphids, spider mites, thrips, whiteflies, and lepidopteran eggs. Their feeding capacity is exceptional; a single larva can consume hundreds of aphids during its developmental stage, significantly reducing pest populations without chemical intervention.

To maximize the impact of green lacewings, farmers should adopt integrated pest management practices. Key measures include maintaining biodiversity by planting nectar-producing flora, avoiding the use of broad-spectrum insecticides, and creating refugia where these beneficial insects can thrive throughout the season.