High Priority Species

Click on any photo below to learn more about the negative impacts caused by each of these invasive species.

1/1
Flowering Rush
(Butomus umbellatus)
1/1
Spiny Waterflea
(Bythotrephes longimanus)
1/1
Fishhook Waterflea
(Cercopagis pengoi)
1/1
Northern Snakehead
(Channa argus)
1/1
Didymo
(Didymosphenia geminata)
1/1
Quagga Mussel
(Dreissena bugensis)
1/1
Mudmat
(Glossostigma cleistanthum)
1/1
Giant Hogweed
(Heracleum mantegazzianum)
1/1
Hydrilla
(Hydrilla verticillata)
1/1
Common Frogbit
(Hydrocharis morsus-ranae)
1/1
Spotted Lanternfly
(Lycorma delicatula)
1/1
White Perch
(Morone americana)
1/1
Round Goby
(Neogobius melanostomus)
1/1
Starry Stonewort
(Nitellopsis obtusa)
1/1
Yellow Floating Heart
(Nymphoides peltata)
1/1
Virile Crayfish
(Orconectes virilis)

The Pennsylvania iMapInvasives Program is a partnership of the Western Pennsylvania Conservancy, the Pennsylvania Natural Heritage Program, and NatureServe.

Funding for Pennsylvania iMapInvasives is provided by the Great Lakes Restoration Initiative.

NatureServe logo, iMapInvasives partner
Pennsylvania Natural Heritage Program, iMapInvasives partner
Great Lakes Restoration Initiative logo, iMapInvasives funding source