Nipplewort aphid

The nipplewort aphid (Hyperomyzus lampsanae) belongs to the order Hemiptera and the family Aphididae. It is a specialized sap-sucking pest primarily associated with host plants of the genus Lapsana, commonly known as nippleworts, within the Asteraceae family.

These aphids primarily target plants in the Lapsana genus, though they can occasionally be found on related weeds. By colonizing these plants, they create a persistent local pest population that can spread if environmental conditions favor rapid reproduction and dispersal.

The biology of Hyperomyzus lampsanae involves a complex life cycle characterized by rapid asexual reproduction (parthenogenesis) during the spring and summer months. This enables the species to reach high density levels quickly, while overwintering is typically achieved through eggs deposited on host plant debris.

The damage caused by this aphid manifests as leaf curling, chlorosis, and stunted growth of shoots due to the removal of phloem sap. Furthermore, the aphids excrete honeydew, which serves as a substrate for sooty mold growth, effectively reducing the photosynthetic surface area and vitality of the plant.

Integrated pest management (IPM) is the most effective approach for controlling this pest. Strategies include cultural practices like weed control to remove host sources, encouraging natural predators such as lady beetles and lacewings, and using selective insecticides only when pest thresholds are exceeded.