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Ataenius spretulus
black turfgrass ataenius, black fairway beetle
Ataenius spretulus is a scarab beetle (Coleoptera: Scarabaeidae) commonly known as the black turfgrass ataenius or black fairway beetle. It is the most common grub in golf course fairways in Michigan and throughout much of North America. The species has been extensively studied in turfgrass management contexts due to its economic impact as a root-feeding pest. Research indicates its abundance and distribution are influenced by soil moisture levels, mowing height, and natural enemy pressure rather than adult oviposition preferences alone.