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      Overview of Indian and Nepali representatives of the Cincticostella nigra (Uéno, 1928) complex (Ephemeroptera, Ephemerellidae), with discussion about Cincticostella Allen, 1971 species complexes

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          Abstract

          The concept of the Cincticostella nigra (Uéno, 1928) (Ephemeroptera: Ephemerellidae) complex is clarified and Indian and Nepali representatives of the complex are reviewed. Four new species are described viz. Cincticostella changfai Martynov & Palatov, sp. nov., Cincticostella funki Martynov, Selvakumar, Palatov & Vasanth, sp. nov., Cincticostella shinichii Martynov & Palatov, sp. nov. and Cincticostella wangi Selvakumar, Martynov & Subramanian, sp. nov. The larva of C. corpulenta (Braasch, 1981) is re-described, based on the holotype and paratypes. Cincticostella gosei (Allen, 1975) is recorded from India for the first time. Morphological differences of the species complexes of Cincticostella Allen, 1971 are analysed. A new species complex, Cincticostella gosei complex, is proposed. Summaries of distribution data and habitat preferences, as well as new larval diagnoses, are presented for all species of the Cincticostella nigra complex.

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          Revision of Ephemerellidae Genera (Ephemeroptera)

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            Two new Cincticostella species from China with a larval key to species of the genus (Ephemeroptera: Ephemerellidae)

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              The imaginal and detailed nymphal characters of Cincticostella fusca (Kang & Yang, 1995) (Ephemeroptera: Ephemerellidae)

               WEI ZHANG,  NA HAN,  MIN ZHANG (2020)
              Among the 17 known species of the genus Cincticostella, only five of them have been reported as both nymphs and imagoes, which does not include the Chinese species C. fusca Kang et Yang (1995). Here the nymphs are redescribed and reared imagoes are reported for the first time, based on material collected from southeastern China. Morphologically, the nymph is unique because of its large body size, expanded genae, pale median stripe on the anterior of the head, and dark tarsi. The male imago can be differentiated from congeners by its large body size, pigmented forewings, and the mesothoracic scutellum having a pair of membranous lamellae. More importantly, its penes are distinct, being fused for most of their length and having complex ventral projections. Adults emerge in early spring (March to April). 
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                Author and article information

                Contributors
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                Journal
                ZooKeys
                ZK
                Pensoft Publishers
                1313-2970
                1313-2989
                May 28 2021
                May 28 2021
                : 1040
                : 123-166
                Article
                10.3897/zookeys.1040.64280
                © 2021

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