Environmental Entomology (2017) 46, 226-236

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Lisa Tewksbury, Richard A. Casagrande, Naomi Cappuccino and Marc Kenis (2017)
Establishment of parasitoids of the lily leaf beetle (Coleoptera: Chrysomelidae) in North America
Environmental Entomology 46 (2), 226-236
Abstract: Three larval parasitoids were imported from Europe to control the lily leaf beetle, Lilioceris lilii Scopoli (Coleoptera: Chrysomelidae), an accidentally introduced herbivore of native and cultivated lilies in North America. Tetrastichus setifer Thomson (Hymenoptera: Eulophidae) was introduced in Massachusetts in 1999, and was found to be established there in 2002. Subsequent releases of T. setifer were made and two additional parasitoids, Lemophagus errabundus Szepligeti (Hymenoptera: Ichneumonidae) and Diaparsis jucunda (Holmgren) (Hymenoptera: Ichneumonidae), were introduced. The establishment and distribution of the three parasitoids was evaluated through 2016. Tetrastichus setifer is now established in Massachusetts, Rhode Island, New Hampshire, Maine, Connecticut, and Ontario, Canada. Lemophagus errabundus is established in Massachusetts and Rhode Island, and D. jucunda is established in Massachusetts, Rhode Island, Connecticut, and Maine. All three parasitoids have spread at least 10 km from release sites. The establishment of T. setifer is associated with a substantial reduction of L. lilii. In time it is likely that the parasitoids will spread throughout the North American range of L. lilii. This process can be accelerated to protect ornamental and native lilies by collecting and redistributing parasitoids to new infestations of L. lilii.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Marc Kenis, Naomi Cappuccino, Richard A. Casagrande

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
classical biocontrol/new introduction

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Lilioceris lilii Lilium (crop) Canada (east)
Lilioceris lilii Lilium (crop) U.S.A. (NE)
Lemophagus errabundus (parasitoid) Lilioceris lilii Lilium (crop) U.S.A. (NE)
Diaparsis jucunda (parasitoid) Lilioceris lilii Lilium (crop) U.S.A. (NE)
Tetrastichus setifer (parasitoid) Lilioceris lilii Lilium (crop) Canada (east)
Tetrastichus setifer (parasitoid) Lilioceris lilii Lilium (crop) U.S.A. (NE)