title: Taxonomic notes on the genus Baetiella Uéno from China, with the descriptions of three new species (Ephemeroptera: Baetidae).
abstract: Nine Baetiella species, including three new species, are reported from China. Baetiella lanpingensis n. sp. is diagnosed by the 2nd segment of labial palpus without inner-apical lobe, the posteromedian margin of terga I-VI each with a single protuberance, posterior margin of sterna V-IX each with a row of continuous long spatulate setae and median caudal filament with only one segment. Baetiella sexta n. sp. is characterized by the 2nd segment of labial palpus bearing an inner-apical lobe, the posteromedian margins of terga I-VI each with a single protuberance, posterior margins of sterna I-VII smooth and median caudal filament with 3-5 segments. Baetiella spathae n. sp. is distinguished from its congeners by the terminal segment of labial palpus asymmetric coniform, the posteromedian margin of terga I-IX each with a single protuberance and posterior margin of sterna V-IX each with a row of long spatulate setae. Additionally, B. macani (Müller-Liebenau, 1985) is removed from the synonymy with B. bispinosa (Gose, 1980) and considered as a valid species. B. marginata Braasch, 1983 is recorded for the first time from China. A key to fourteen species of Baetiella known from mature nymphal stages in the world is provided.
authors.affiliation: Department of Entomology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.; Email: xtong@scau.edu.cn.
authors.forename: Weifang
authors.initials: W
authors.lastname: Shi
authors.affiliation: Department of Entomology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.; Email: xtong@scau.edu.cn.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Tong
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D002681:China; D017753:Ecosystem; D065133:Ephemeroptera / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D005260:Female; D008297:Male; D009758:Nymph / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development; D009929:Organ Size