WNY PRISM Tier Rankings List Updated 2025

WNY PRISM’s Species Tier Rankings List has been updated and there are sixty-five new additions! Highlighted below are the newly added Tier 1, Tier 2 and Tier 5 species.

Aquatic

Big-eared radix (Radix auricularia): Tier 5a – Survey

Terrestrial

Asian tiger mosquito (Aedes albopictus): Tier 2 – Eradication
Bamboo (Phyllostachys spp.): Tier 2 – Eradication
Beautybush (Kolkwitzia amabilis): Tier 2 – Eradication
Beech scale (Cryptococcus fagisuga): Tier 2 – Eradication
Chocolate vine (Akebia quinata): Tier 2 – Eradication
Elongate hemlock scale (Fiorinia externa): Tier 2 – Eradication
European rabbit (Oryctolagus cuniculus): Tier 2 – Eradication
Incised fumewort (Corydalis incisa): Tier 1 – Raise Awareness
Spring fumewort (Corydalis solida): Tier 2 – Eradication
Wood sedge (Carex sylvatica): Tier 2 – Eradication
Yellow groove bamboo (Phyllostachys aureosulcata): Tier 2 – Eradication

To learn more about WNY PRISM’s Tier Rankings, please visit our Priority Invasives page.

Photo Credits: (Top) big-eared radix – Vanessa Howard, Portland State University, Bugwood.org; (Bottom, from left to right) beautybush – John Ruter, University of Georgia, Bugwood.org; chocolate vine – Chris Evans, University of Illinois, Bugwood.org; elongate hemlock scale – Eric R. Day, Virginia Polytechnic Institute and State University. Bugwood.org; spring fumewort – Gil Wojciech, Polish Forest Research Institute, Bugwood.org.