SLELO PRISM

The spotted lanternfly (SLF) is an invasive pest that threatens our agricultural industry and forests. Please keep a lookout for SLF while taking walks in your neighborhood or visiting a grape vineyard or apple orchard. If you find SLF please take a photo and note your location and then destroy the insect or egg mass. Report your observations to iMapInvasives or to spottedlanterfly@agriculture.ny.gov

Tree of heaven (TOH) is an invasive tree that is a preferred host of the spotted lanternfly. TOH is often found growing in urban areas along fences and roadsides. Please keep an eye out for this tree while you're enjoying the outdoors in your community. Please report sightings of Tree of Heaven to iMapInvasives.org.

Porcelain berry is an invasive woody shrub that smothers out understory vegetation and girdles trees. Porcelain berry has been confirmed in Potsdam and Ogdensburg. Keep an eye out for Porcelain berry in your yard and while enjoying the outdoors in your community or in forested areas. Please report sightings to iMapInvasives.org.

Hemlock Woolly Adelgid (HWA) kills hemlock trees. We are asking volunteers to search for HWA in State Parks, and other forested areas throughout the region. Check the branches of hemlock trees for round white masses at the base of needles during the fall/winter. Other signs of HWA are lack of new growth in the spring, and needle loss and discoloration. Please report positive and negative observations to iMapInvasives.org.

Tench is an invasive fish that threaten the aquatic food web of the Great Lakes and have the potential to infect other fish with parasites. We're asking volunteers to keep an eye out in the St. Lawrence River & Eastern Lake Ontario for fish with rounded dark fins, bright orange eyes, and olive-colored scales with a lighter belly.If you find this fish, put it on ice and contact rwilliams@tnc.org.

Fanwort is an invasive aquatic plant that reduces biodiversity and impedes recreational activities. It is currently found in SLELO PRISM at Kasoag Lake in Williamstown, NY. We are asking volunteers to search for fanwort in Fish Creek, which connects Kasoag Lake to Oneida Lake. Look for submerged fan-like leaves with Y-shaped tips. Please report observations to iMapInvasives.org.

The Elm zigzag sawfly (Aproceros leucopoda) is an invasive insect native to Asia. In August of 2022, the elm zigzag sawfly was confirmed for the first time in New York State in St. Lawrence County. Its common name comes from the zigzag feeding pattern of its larvae. Elm zigzag sawflies feed exclusively on elm trees. Although the sawfly has not yet been shown to cause tree mortality, the feeding of the larvae can cause significant defoliation, branch dieback, and crown thinning on infested elm trees. Larvae are light green with a black band on their head with T-shaped markings above the second and third pair of true legs. Adults are black with yellowish-white colored legs and smoky-brown colored wings. Cocoons are loosely-spun and net-like; they can be found attached to leaves or other objects like fence posts. Please report observations to iMapInvasives.org.