Spotted lanternfly is a major pest of concern across most of the United States. This insect is native to China and parts of India, Vietnam, Japan, and Taiwan. It was first identified as an invasive species in 2004 in South Korea and is now a major pest there. Spotted lanternfly was first detected in the United States in Pennsylvania in 2014.
In July 2021, a population of spotted lanternfly (Lycorma delicatula) was identified in Indiana in Switzerland County, near the Ohio River. Since then, populations have been found in Huntington, Elkhart, St. Joseph, and Porter counties. DEPP and USDA continue to conduct surveys to ascertain the extent and source of these infestations as well as determine what management strategies will be implemented.
Why is spotted lanternfly a problem?
Adults and nymphs have piercing-sucking mouthparts and feed on the vascular tissue of leaves, petioles, young shoots, branches and trunks of its hosts. Adults and older nymphs may feed in large populations. This extensive feeding results in oozing wounds on woody tissue and wilting and death of branches.
The spotted lanternfly can be spread long distances by people who move infested material. If allowed to spread, this pest could have serious impact on the grape, hops, orchard and logging industries in the United States.
Videos
Video: The Invasive Spotted Lanternfly
Video: Spotted Lanternfly Canine UnitReporting
- IN INDIANA
Suspected finds should be reported to the Indiana Department of Natural Resources. Call 866-NO EXOTIC (866-663-9684) or email DEPP@dnr.IN.gov. Please leave your name, contact number and detailed information about what you are reporting. Photos are always appreciated. By notifying us of a potential pest problem you provide an invaluable service to the DNR and our natural resources.
- OUTSIDE INDIANA
Connecticut
- The Connecticut Agricultural Experiment Station spotted lanternfly information
If you suspect you have found SLF in Connecticut, snap a picture of it and fill out the SLF Reporting Form.
Delaware
- Delaware Department of Agriculture spotted lanternfly information
To report SLF sightings in Delaware, follow the instructions linked above and email HitchHikerBug@delaware.gov.
Maryland
- Maryland Department of Agriculture spotted lanternfly Information
Report SLF sightings in Maryland to DontBug.MD@maryland.gov
New Jersey
- New Jersey Department of Agriculture spotted lanternfly information
Report SLF sightings in New Jersey online.
New York
- New York State Department of Agriculture and Markets spotted lanternfly information
Report SLF sightings in New York online.
Ohio
- Ohio State Department of Agriculture spotted lanternfly quarantine information
Report SLF sightings in Ohio to plantpest@agri.ohio.gov
Pennsylvania
- Pennsylvania Department of Agriculture spotted lanternfly website.
Report SLF sightings in Pennsylvania online.
Virginia
- Virginia Department of Agriculture and Consumer Services spotted lanternfly information (on Plant Industry Services Page)
West Virginia
- West Virginia University Extension Service spotted lanternfly information
Report SLF sightings in West Virginia by collecting a specimen or taking a high quality image and contacting the West Virginia Department of Agriculture at bugbusters@wvda.us.
- The Connecticut Agricultural Experiment Station spotted lanternfly information
Identification
This insect is a planthopper with a distinctive wing pattern. Wings are held downward and folded when the insect is at rest. The forewings, which are visible in the resting position, are greyish with black spots and the wing tips show a network of veins. Part of the hind wings is red with black spots and the remainder is white and black. Adults are approximately one inch long from the head to the end of the folded wings. The abdomen is yellowish with black bands. Adults may not be seen flying (as they are weak flyers) but will likely be seen hopping or crawling.
Brownish-yellow seed-like eggs are laid in masses of 30-50. Eggs are laid in four to seven columns approximately an inch long and covered with a whitish gray waxy layer. As it ages, the waxy layer turns grayish brown and has the appearance of cracked mud.
Nymphs emerge in April or May and have four instars or growth stages. The first three instars are black with white spots. The fourth instar retains the white spots but has a red and black body with red wing pads. The first to fourth instar ranges in size from a 1/8 of an inch to a little over a half inch long.
The nymphs will climb into trees shortly after they emerge. They will drop off the trees when they encounter a physical obstacle or disturbance from the wind and start climbing up again. Fourth instar nymphs develop into adults in late June or early July. Adults continue to feed on plant tissues. Mating and egg deposition begin in September and continue until a hard frost.
Spotted lanternfly overwinters as an egg on the bark of trees, firewood, rocks, outdoor furniture, equipment, vehicles, or anything that is stored outside. This is especially a risk for items outside during that egg laying period. There is one generation per year.
Where to monitor
The spotted lanternfly has a recorded host list of over 100 species, primarily woody species. Their preferred host is tree of heaven (Ailanthus altissima) which is a common invasive species in Indiana.
Inspection of areas and objects near tree of heaven should be a priority since this is a preferred host tree. Smooth surfaces are preferred for egg laying and eggs may be in sheltered locations or in crevices on trees or outdoor objects. Nymphs and adults tend to cluster at the base of trees or lower trunk during the day and are more active at dusk or early evening. Infested trees can show significant deposits of honeydew and sooty mold around the base of the tree to the point where the base and surrounding ground may appear black. Tree sap oozing from wounds on trees and the honeydew may attract ants, bees and wasps.
Inspection of articles such as logs, firewood, other tree parts, decorative grapevines, any outdoor household articles and vehicles coming from infested areas will assist in reducing the spread of this invasive pest long distances.
| Partial Spotted Lanternfly Host List | |
|---|---|
| Tree of heaven | Ailanthus altissima |
| Grapevine | Vitis sp. |
| Hop | Humulus sp. |
| Virginia creeper | Parthenocissus quinquefolia |
| Amur cork tree | Phellodendron amurense |
| Chinese mahogany | Toona sinensis |
| Korean evodia or bee tree | Tetradium daniellii |
| Willow | Salix sp. |
| Red maple | Acer rubrum |
| Sugar maple | Acer saccharum |
| Silver maple | Acer saccharinum |
| Shagbark hickory | Carya ovata |
| Birch | Betula sp. |
| Chinaberry | Melia azedarach |
| Snowbell | Styrax japonicus |
| Oak | Quercus sp. |
| Pine | Pinus sp. |
| Lilac | Syringa sp. |
| Tulip poplar | Liriodendron tulipifera |
| American beech | Fagus grandifolia |
| American sycamore | Platanus occidentalis |
| Walnut | Juglans sp. |
| Rose | Rosa sp. |
| Japanese angelica tree | Aralia elata |
| Apple | Malus sp. |
| Cherry | Prunus sp. |
| Plum | Prunus sp. |
| Peach | Prunus sp. |
| Nectarine | Prunus sp. |
| Apricot | Prunus sp. |
| Almond | Prunus sp. |