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By: Matsumura, YokoType: ArticleIn: ZooKeysVolume: 1252Series:Issue:Date: 2025-9-19Page Range: 151--165Publication Info: Sofia, Bulgaria Pensoft PublishersSubjects: bursa copulatrix criocerine beetles endophallus endophallus Endophallus internal sac scanning electron microscopy (SEM) sensilla spermathecal duct