Fenusa pusilla


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Noun1.Fenusa pusilla - small black sawfly native to Europe but established in eastern United StatesFenusa pusilla - small black sawfly native to Europe but established in eastern United States; larvae mine the leaves of birches causing serious defoliation
birch leaf miner
sawfly - insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant
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Birch leafminer (Fenusa pusilla [Lepeletier]) (= pumila Klug) (Hymenoptera: Tenthredinidae), an invasive Palearctic leaf mining sawfly attacking several species of Betula, has been present in North America for at least 85 years, and was first recorded in Connecticut (Friend 1933).
Fenusa pusilla, which remained a high-density pest in the northeastern United States throughout the 20th century, has now come under complete biological control in MA, CT, RI, NY (Long Island), PA, and northern NJ due to the introduced parasitoid L.
Preliminary life tables and notes on mortality factors of the birch leaf miner, Fenusa pusilla (Lepeletier) (Hymenoptera: Tenthredinidae), on blue birch, Betula caerulea grandis Blanchard, in Quebec.
Biological control of Fenusa pusilla (Hymenoptera: Tenthredinidae) in the northeastern United States: a thirty-four year perspective on efficacy

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