species 42 observations
Elm Argid Sawfly
Arge scapularis
Field notes
Arge scapularis or elm argid sawfly is a sawfly in the family Argidae. It is found across North America and commonly infests elm trees. The name "scapularis" refers to the insect's distinctive so-called "shoulder blades".
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Greener is more native, amber more introduced; paler is less certain. How this was decided