New substitute name for the genus Dayus Steiner & Amaral, 1999 (Annelida: Polychaeta: Histriobdellidae) Author Zhang, Yu-Tao College of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou, P. R. China, 561000 & Special and Key Laboratory of Functional Materials and Resource Chemistry of Guizhou Provincial Education Department, Anshun University, Anshun, Guizhou, P. R. China, 561000 text Zootaxa 2014 2014-05-27 3802 3 400 400 journal article 5389 10.11646/zootaxa.3802.3.10 84afbaea-53e6-4f62-8efe-68b618b846cc 1175-5326 4917773 50BA8D92-8E07-4020-A5EF-5E59F137DD32 Genus Steineridrilus nom. nov. Dayus Steiner & Amaral, 1999: 106 (Annelida: Polychaeta : Histriobdellidae ). Preoccupied by Dayus Mahmood, 1967: 39 ( Insecta : Hemiptera : Cicadellidae ). Type species: Stratiodrilus cirolanae Führ, 1971 Etymology. The genus name from T. M. Steiner who is the author of the preexisting Dayus ; gender masculine.