What is "dayus"

Dayus may refer to:

• Dayus (leafhopper) Mahmood, 1967, a genus of insects in the Family Cicadellidae
• Dayus Steiner & Amaral, 1999, syn. of Steineridrilus Zhang, 2014, a genus of polychaete worms in the family Histriobdellidae and the order Errantia (Aciculata)
• Dayus Gerken, 2001, syn. of Jennidayus Zhang, Gerken and Chen 2014, a crustacean genus in the family Gynodiastylidae
• Kathleen Dayus (1903–2003), an English author

Dayus is a genus of leafhoppers in the subfamily Typhlocybinae.