A review of the damselfly genus Megalestes Selys, 1862 (Insecta: Odonata Zygoptera: Synlestidae) using integrative taxonomic methods Author Yu, Xin College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China Author Xue, Junli 0000-0003-0696-2596 Key Laboratory of Atherosclerosis in Universities of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China. https: // orcid. org / 0000 - 0003 - 0696 - 2596 text Zootaxa 2020 2020-09-10 4851 2 245 270 journal article 8529 10.11646/zootaxa.4851.2.2 0c2aa01d-58eb-498b-a278-8b6b4367c1a2 1175-5326 4407479 DCD23BAB-CBF9-48F0-90C9-E490803F0757 Megalestes omeiensis Chao, 1965 ( Figs. 3f ; 4f ; 5d, q ; 6h ) Megalestes omeiensis Chao, 1965: 192 [Emeishan, Sichuan ] A large-sized species restricted to the western edge of the Sichuan Basin that has not been studied further since its original description. Chao (1965) indicated the holotype (m#, Emeishan, Sichuan , 1955-vi-20 , 580– 1100 m , Yang Xingchi leg.) but did not attach a type tag to the specimen. Thus, for a long time, the holotype was unknown until the first author found it as well as two paratypes in IZAS and attached type tags. This species resembles M. heros as they are both the largest species in this genus and have a similar appearance. However, it is easy to distinguish them, in that the terminal lateral lobes of the genital ligula are small and curly in M. omeiensis but very large, like wings, in M. heros .