Spotted Lanternfly

The spotted lanternfly (*Lycorma delicatula*) is an invasive planthopper native to parts of Asia.

The spotted lanternfly (*Lycorma delicatula*) is an invasive planthopper native to Asia, where it feeds on a wide range of plants including grapevines, fruit trees, and hardwoods. It is considered a serious agricultural and forestry pest in areas where it has spread, such as parts of the United States. Canadian regulators monitor the species as a potential threat to grape, fruit tree, and forestry industries in Canada.

Taxonomy and appearance

Despite its common name, the spotted lanternfly is not a fly but a planthopper belonging to the order Hemiptera and family Fulgoridae. Adults are strikingly coloured, with grey forewings marked by black spots and bright red-and-black hindwings.

Native range and spread

The species is native to Asia, with sources listing China, India, Vietnam, and in some references Japan and Korea in the broader native or introduced range. It was first detected in North America in Pennsylvania in 2014 and has since spread to other parts of the United States. Canadian authorities consider it a potential invasive pest of concern, particularly for the grape and fruit industries.

Feeding and damage

Spotted lanternflies feed by sucking sap from many host plants, including grapevines, fruit trees, hardwood trees, and their preferred host, tree-of-heaven (*Ailanthus altissima*). Their feeding weakens plants, and the honeydew they excrete can encourage the growth of sooty mold, which further harms the plant.

Life cycle and behaviour

In Pennsylvania, the insect has a yearly life cycle. It lays egg masses on hard surfaces such as vehicles, outdoor equipment, and firewood, which facilitates its spread. Although a weak flier, it can hitchhike on transported objects, contributing to its rapid expansion into new areas.