SPOTTED LANTERNFLY A serious threat to vineyards, orchards, and urban forests Egg masses dry and crack over time. Spotted lanternfly (SLF; Lycorma delicatula) is an invasive pest from Asia that kills plants by sucking the sap from leaves and stems. SLF feed in swarms on more than 70 species of trees and plants, including cultivated grapes, fruit trees, black walnut, maples, and oaks. SLF is a threat to Canada’s multi-billion dollar wine (viticulture) and fruit industries. ACTUAL SIZE EGGS EARLY NYMPH LATE NYMPH ADULT SEPT – APR APR – JUL JUL – SEPT JUL – DEC 0 CM 1 2 3 Eggs can be found on a variety of hard surfaces, including picnic tables WHERE IS SLF? SIGNS OF SLF: WHAT CAN YOU DO? and patio stones. SLF has not • Muddy grey egg • Report sightings! been detected masses on hard • Avoid planting tree of in Canada. It was surfaces heaven, SLF’s preferred host; first detected • Accumulation of if you see tree of heaven, in Pennsylvania a sweet, sticky inspect it for SLF in 2014 and has substance called • SLF can move to new since established “honeydew” and locations on items such as sooty mould on and at vehicles, plants and nursery and spread to the base of trees neighbouring stock, stone and building states. As of 2020, • Swarming of nymphs materials, and shipping and adults on host containers. Check hard SLF has been trees, which include surfaces for egg masses intercepted as far Sooty mould patch (dark colouring at tree of heaven, frequently, especially when the base of the tree). north as New York grapevines, fruit trees, leaving or transporting State, bordering black walnut, maples, materials from areas of Ontario’s Niagara oaks, and more known SLF detections or region. quarantine zones Report sightings to eddmaps.org/ontario (Ontario) or www.invasivespeciescentre.ca (Canada-wide). SLF swarming on tree of heaven. Photos: Left header, Erica Smyers, Penn State; right header (egg masses), Emelie Swackhamer, Penn State; top side panel, U.S. Department of Agriculture; second side panel, Pennsylvania Department of Agriculture; bottom side panel, Penn State Extension. .
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