An insect called the soybean tentiform leafminer was first detected feeding on soybeans in the United States in 2021. University of Minnesota Extension is reporting this pest has been found in 51 counties in Minnesota, North Dakota, and South Dakota. This tiny moth is normally seen along field edges close to tree lines. The larvae feed inside soybean leaves, forming mines that are initially seen on the lower surface and eventually on the upper surface. The leafminer was initially found in the Twin Cities area and moved into portions of south-central Minnesota and southeastern South Dakota in 2022. Last year, it was evident in most of western Minnesota and the southern Red River Valley.
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