Spotted lanternfly

Taxonomic classification: The Spotted lanternfly (Lycorma delicatula) is a member of the order Hemiptera and the family Fulgoridae. Originating from Asia, this species has become a significant concern for international biosecurity due to its destructive impact on both agriculture and natural forest ecosystems.

Host crops: This insect is a polyphagous pest, known to feed on more than 70 different species of plants. Its primary hosts include grapevines, various fruit trees like apples and peaches, and hardwood trees. Tree of Heaven (Ailanthus altissima) serves as a critical host for its reproductive success and population buildup.

Biology and life cycle: The lifecycle of the Spotted lanternfly consists of egg, nymphal (four instars), and adult stages. Overwintering occurs in the egg stage, where masses are deposited on tree trunks, stones, or man-made structures. Hatching typically occurs in spring, followed by rapid nymph development into winged adults by mid-summer.

Nature of damage: Damage is caused by both nymphs and adults piercing plant tissues and feeding on phloem sap. This depletion of nutrients leads to reduced vigor, stunted growth, and potential tree mortality. Furthermore, the excretion of large volumes of honeydew promotes the growth of sooty mold, which degrades fruit quality and hampers photosynthesis.

Control measures: Managing this pest requires an integrated strategy:

• scraping and destroying egg masses during winter;
• applying sticky bands on tree trunks to capture nymphs;
• utilizing systemic insecticides during peak infestation periods;
• removing Tree of Heaven from orchards and vineyards.