Spotted Lanternfly & Tree-of-heaven: NY needs your help!
Spotted lanternfly (SLF) is an invasive pest from Asia that feeds on a variety of plants including grapes, hops, and maple trees, posing a severe threat to NYS forests and agriculture (more info). SLF's preferred host plant, Tree-of-heaven (TOH), is already found in much of the state. SLF was first found in PA in 2014, and several populations have since been found in NY. Agencies and conservation partners across the state are working to protect our state resources from these invasives, and we are requesting help from volunteers to complement these efforts.
Watch our Webinar! Identifying & Reporting Spotted Lanternfly and Tree-of-heaven with NY iMapInvasives
New York State is seeking volunteers like you to look for SLF and TOH in your area. You can supplement NYS efforts to prevent negative impacts from invasive species by knowing what to look for and how to report observations to New York’s official invasive species database, iMapInvasives.
Photo collage of Spotted Lanternfly (Lycorma delicatula) and Tree-of-heaven (Ailanthus altissima)
Picking a location to go to and survey at least three times in 2022 (once in Spring, Summer, and Fall)
Checking for spotted lanternfly and tree-of-heaven
Reporting your observations to iMapInvasives
Conservation partners have identified 1km grid squares across the state where volunteer survey efforts would be most helpful. These may be close to known infestations, along major pathways, and/or near important commodities that could be harmed by SLF. Use the interactive map below to sign up for a grid square!
Progress so far
This year (2022)
Spotted Lanternfly presence records
Spotted Lanternfly not-detected records
Tree-of-heaven presence records
Tree-of-heaven not-detected records
Last year (2021)
Thank you to all who have contributed!!!!
How to volunteer
Step 1: Set up an account with iMapInvasives
Step 2: Select a grid cell to survey for SLF
Step 3: Prep for surveying in your square
You can use the Find my Claimed Grid Squares Tool on the Sign-up Map to check which grid cells you claimed.
Review resources on identifying SLF and TOH, and which SLF life stages are currently active.
Select one to three locations within your grid square that are publicly and safely accessible.
Tip: If possible, select areas with varying levels of human disturbance. For example: a parking lot, a nature trail, and a park.
Set up the iMapInvasives Mobile App on your device and enter a Fake Species Record to test it out. You can view submitted records on the online interface.
Step 4: Survey your square for SLF & TOH
Travel to one to three locations within your grid square that are safely and publicly accessible.
Survey for SLF and TOH - remember to check for SLF egg masses on any flat surface - trees, rocks, structures, metal objects, etc. (more info). TOH grows in natural areas as well as highly developed areas, even growing through cracks in cement and between buildings.
Use the iMapInvasives Mobile App to report:
Presence records when you encounter SLF or TOH
Not-detected records if you search for the species but do not find any.
Enter time searched for each record - we recommend spending 3-10 minutes to search a location.
Repeat: We are asking volunteers to survey their selected sites 3-4 times throughout the year, one time in each the following survey periods (exact dates coming soon):
Spring (March-June 21) - egg masses & instar nymphs
Early Summer (June 22-July 30) - instar nymphs & adults
Late Summer (August 1-Sep. 21) - instar nymphs &adults
Fall (Sep 22. - Dec 20) - adults & egg masses
Questions? Email firstname.lastname@example.org
Photo submitted to iMap 7/14/2021
Spotted Lanternfly Fact Sheet (DEC/AGM/Parks)
Important info for volunteers
Guidance for surveying:
Only survey areas open to the public. Review and follow all rules and regulations that pertain to the site visited, including paying parking fees, if applicable.
Stay alert and aware of surroundings when surveying parking areas and roadsides. Only survey areas that are easily and safely accessible.
Follow applicable COVID-19 protocols
Please note that agencies and partners are not obligated to remove any invasive species found
Claim a location to survey for SLF and TOH
Find grid squares near a location
1. Enter address or location
2. Adjust search distance
3. Click Searcb
Click on a grid square and claim it with your iMap Person ID
Review the tips and click Launch Sign-Up Map below to open the map in a new tab, and claim a grid square to survey for SLF and TOH.
Zoom in to see grid squares
Focus grid squares*
Selected by NYS agency partners
Grid squares recommended by PRISMs
Grid squares with public access land
Grid squares with confirmed TOH
Claimed Grid squares
*Focus grid squares are the highest priority grid squares to claim, but you can claim any available grid square in your preferred area.
"Can I survey somewhere else?"
The grid squares were selected to drive volunteers to areas that are accessible and/or where conservation partners need the most help surveying for SLF and TOH (often focusing on areas containing publicly accessible land). However, surveys for SLF and TOH are helpful at any location, including outside of grid squares.
You can participate in this effort without signing up for a grid square by surveying for SLF and TOH and submitting observations to iMapInvasives in your own backyard, local parks, and other areas which may not be captured by grid squares.
Please login to iMap and join the "NYS SLF-TOH-iMap Volunteer Survey 2021" project to associate your records with this effort (how to join a project).
Trouble viewing the map?
If you can't see the grid squares, make sure you are zoomed in, and click and drag to pan around to nearby areas.
Make sure your browser window is maximized.
If you have your browser zoomed in (i.e. set to 125% to make text larger), please zoom out to 100%.
Try another device (desktop, laptop, phone, tablet).
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