Nematus erythrogaster

Taxonomic challenges in the identification process, an example - Alder Sawfly, Nematus erythrogaster

The OSU C. Wayne Ellett Plant and Pest Diagnostic Clinic (PPDC) received a sample of sawfly larvae from Holden Arboretum collected on a species of alder (Alnus spp.) in June 2023. The larvae were eating alder leaves when they were collected by the propagator at Holden Forests and Gardens.
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Suranga Basnagala
Kayla Perry