Thistle lace bug

Taxonomic position: The thistle lace bug (Tingis ampliata) belongs to the order Hemiptera and the family Tingidae. These insects are easily identified by their delicate, lace-like appearance caused by the dense network of ridges and depressions on their wings and pronotum.

Host plants: The primary host range of this species is restricted to the family Asteraceae. They are most commonly associated with thistles (Cirsium spp.) and related weeds, but they can occasionally spread to crops if host populations are dense in adjacent areas.

Biology and lifecycle: The species overwinters as adults sheltered in debris, leaf litter, or the upper soil horizons. As temperatures rise in spring, they emerge to feed on host plants, where mating occurs and eggs are inserted directly into the leaf tissue or veins.

Damage and impact: Feeding activity results in characteristic chlorotic spotting on the leaves, which often leads to necrosis or premature leaf drop. The removal of sap causes significant physiological stress to the plant, reducing its ability to perform photosynthesis and thrive in competitive environments.

• Implementation of mechanical weed control to reduce host availability.
• Removal and destruction of crop residues after harvest to limit overwintering sites.
• Field monitoring to determine if population densities require targeted intervention.
• Application of selective insecticides when necessary to minimize the impact on beneficial insects.