Blue-green sharpshooter

Draeculacephala minerva, commonly known as the blue-green sharpshooter, is a species of leafhopper belonging to the family Cicadellidae (order Hemiptera). This insect is a significant concern for agricultural producers due to its feeding habits and its role as a primary vector for plant pathogens.

This pest is highly polyphagous, targeting various agricultural crops, including alfalfa, grasses, grains, and most notably, grapevines. Their ability to colonize large areas makes them a persistent threat to commercial orchards and vineyards throughout their range.

The life cycle of the sharpshooter consists of the egg, nymph, and adult stages. The insects feed by inserting their piercing-sucking mouthparts into the xylem of the plant. During the growing season, they undergo multiple generations, which allows their populations to explode if left unmanaged.

The direct damage to plants includes localized tissue damage, but the indirect damage is far more severe. The blue-green sharpshooter is a key vector of Xylella fastidiosa, the bacterium responsible for Pierce's disease in grapevines. This disease causes leaf scorch, shriveled fruit, and eventually the death of the entire plant.

Effective management strategies against this pest require an integrated approach:

• Regular field scouting using yellow sticky traps to track adult populations.
• Removing riparian vegetation and weeds that provide overwintering sites for the sharpshooters.
• Applying insecticides specifically targeted at leafhopper control during peak activity periods.
• Implementing landscape management to reduce the movement of the pest from surrounding wild habitats to sensitive crops.