摘要
The nymphal stages of seven new species of Caenidae, all belonging to genus Caenis, from Taiwan have been described. They are C. argillosa n. sp., C. nitida n. sp., C. bella n. sp., C. corphulenta n. sp., C. cornigera n. sp., C. granifera n. sp., and C. montana n. sp. In addition, the eggs of six species were observed using scanning electron microscopy. Key to the species is given.