Brilliant emerald

The Brilliant emerald (Somatochlora metallica) is a species of dragonfly belonging to the family Corduliidae. Contrary to some misconceptions, it is not a plant pest. It does not feed on crops, vegetables, or fruits; rather, it is a highly specialized aerial predator that contributes significantly to ecological balance.

The biology of this species is tied to freshwater habitats. The larvae are aquatic, living in streams, lakes, or ponds for up to three years before emerging as adults. During their larval stage, they prey upon small aquatic organisms, while the adult dragonflies are known for their exceptional flight agility and hunting efficiency.

Adult Somatochlora metallica feed primarily on small flying insects, including mosquitoes, midges, and other flies. By controlling the populations of these flying pests, they perform a form of biological control that benefits both farmers and gardeners, helping to maintain a healthier environment without the use of chemical pesticides.

Regarding agricultural harm, there is no evidence to suggest that this species causes any damage to plants. It lacks the specialized mouthparts required to ingest plant tissue or sap. Therefore, no protective measures or pest management strategies are needed for this species; in fact, they should be encouraged as beneficial inhabitants of a rural landscape.

To promote a healthy environment for these dragonflies, farmers are encouraged to maintain buffer strips of native vegetation along the edges of ponds and irrigation ditches. This ensures that the water remains clean and provides necessary habitats for the larval stage, allowing these beneficial predators to thrive and continue their role in natural pest suppression.