Blister Beetles

black blister beetles

Description Blister beetles are very rare in Ontario but have been occasionally found in alfalfa fields north of Lake Erie. They are more common in arid climates, such as the U.S. Midwest, and are often associated with grasshopper infestations. The three most common species are the black blister beetle (Epicauta pensylvanica), the ash grey blister […]

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Black Cutworm Alert – Corn and Soybeans At Risk

Reports are coming in that black cutworm larvae are cutting corn and even soybeans. We don’t often see cutting in soybeans but two fields in Niagara region were reported today with significant stand loss and a variety of sizes of larvae (Figures 1 & 2). Fields not treated with an insecticide seed treatment or planted […]

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Fall Armyworm Alert – Again!

Scout vulnerable crops for feeding and larvae including winter canola, winter cereals, forages and cover crops. Especially in the southwestern counties but not limited to this area. Currently, there seems to be a pocket in the Blenheim area that requires attention. Meghan Moran has found three winter canola fields near Blenheim this week that have […]

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Monitor and Report Spider Mite Resistance in Ontario Soybean and Dry Bean Crops

Written by: Tracey Baute, Field Crop Entomologist, OMAFRA, Dr. Vojislava Grbic, Associate Professor, Western University and Dr. Ian Scott, Research Scientist, AAFC-London With the exception of the significant rain events in the last week, this year’s hot, dry conditions and early wheat harvest could be priming us for another bad spider mite season in soybeans […]

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