Bactra venosana, the nutgrass borer or nutsedge borer, is a moth of the family Tortricidae. It was first described by Philipp Christoph Zeller in 1847. Julius von Kennel provides a full description. It has a wide distribution, from southern Europe, North Africa and Asia Minor to India, Sri Lanka, southern China, Malaya, Australia and into the Pacific where it is found on Java, Borneo, the Philippines, Taiwan, Timor, the Solomons, the Carolines and Fiji. It was introduced to Hawaii in 1925 to control nutsedge. It is now found on Kauai, Oahu, Molokai, Maui, Lanai and Hawaii.

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