title: Description of Sarasaeschna kaoi sp. nov. in Taiwan, with notes on the proposed differentiating characters of the pyanan-group (Odonata, Aeshnidae).
abstract: Sarasaeschna kaoi sp. nov. collected from Yuli, Hualien County in eastern Taiwan, is easily distinguished from all known congeners by its male having short and straight cerci. Judging from male penile structure, it is considered to belong to the pyanan-group of species and resembles in general appearance the Chinese S. zhuae described from Fujian. The only known habitat of S. kaoi is a muddy and grassy swamp in natural evergreen forest. The diagnostic characters of the pyanan-group proposed by Karube & Yeh are also discussed.
authors.affiliation: Division of Forest Protection, Taiwan Forestry Research Institute (TFRI), No.53, Nanhai Rd., Zhongzheng Dist., Taipei City 10066, Taiwan.; Email: wcyeh@tfri.gov.tw.
authors.forename: Wen-Chi
authors.initials: WC
authors.lastname: Yeh
authors.affiliation: Department of Natural Resources and Environmental Studies, National Dong Hwa University (NDHU), No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan; Email: unknown.
authors.forename: I-Lung
authors.initials: IL
authors.lastname: Lee
authors.affiliation: Department of Natural Resources and Environmental Studies, National Dong Hwa University (NDHU), No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien 97401, Taiwan; Email: kcwong@mail.ndhu.edu.tw.
authors.forename: Kwok-Ching
authors.initials: KC
authors.lastname: Wong
mesh_terms: D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D017753:Ecosystem; D005260:Female; D008297:Male; D063191:Odonata / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D009929:Organ Size; D013624:Taiwan