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Four species of Eucosmini are described from western United States: Eucosma owensana, n. sp., Epiblema vargoana, n. sp., Sonia crabtreei, n. sp., and Pelochrista purgatoriana, n. sp. Included is an updated account of Eucosma southamptonensis (Heinrich), with distributional data and an illustration of the previously unknown female genitalia.
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Donald J. Wright (2024) studied this question.
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