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      Description of a new species of Megischus Brullé (Hymenoptera, Stephanidae), with a key to the species from China

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          Abstract

          A new species of the genus Megischus Brullé, 1846, Megischus kuafu Ge & Tan, sp. nov., is described and illustrated from Guizhou Province, China. The key to all four species from China is included. A distribution map of the Chinese species is added.

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          Das phylogenetische System der Hymenoptera Teil 4: Aculeata (Unterordnung Apocrita)

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            PARASITISM OF SIREX NOCTILIO F. BY SCHLETTERERIUS CINCTIPES (CRESSON) (HYMENOPTERA: STEPHANIDAE)

            K Taylor (1967)
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              Using the size independent discriminant analysis to distinguish the species of Myliobatis Cuvier (Batoidea: Myliobatidae) from Brazil

              The two only species of Myliobatis Cuvier, that occur in the Brazilian coast, Myliobatis freminvillii Lesueur and Myliobatis goodei Garman, have great similarity in external morphology and possess few diagnostic characters that allow easy identification. In order to discriminate these two species, 34 specimens of M. freminvillii and 19 of M. goodei were measured and twenty morphometric characters were taken from each specimen. The residuals of a previous regression analysis performed on all morphometric variables relative to the disc width were used in the Size Independent Discriminant Analysis. All specimens were correctly allocated to their respective taxa. The analysis showed a clear separation of the specimens, forming two well-defined distinct groups. The fifth interbranchial distance (5ID) was the variable with the highest standardized discriminant coefficient value. The fifth interbranchial distance (5ID)-Internarial distance (IND) and fifth interbranchial distance (5ID)-Mouth width (MW) were the proportions that showed better differentiation between Myliobatis species.
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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2021
                08 March 2021
                : 1022
                : 65-77
                Affiliations
                [1 ] College of Forestry, Beijing Forestry University, Beijing 100083, China Beijing Forestry University Beijing China
                [2 ] Shaanxi Key Laboratory for Animal Conservation / Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, 229 North Taibai Road, Xi’ an, Shaanxi 710069, China Northwest University Xian China
                Author notes

                Academic editor: K. van Achterberg

                Author information
                https://orcid.org/0000-0003-3769-1530
                Article
                62833
                10.3897/zookeys.1022.62833
                7960687
                492c1aa6-6594-4f1a-8699-e614c89b6bd1
                Si-Xun Ge, Hong-Liang Shi, Li-Li Ren, Jiang-Li Tan

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 06 January 2021
                : 10 February 2021
                Categories
                Research Article
                Stephanidae
                Systematics
                Taxonomy
                China

                Animal science & Zoology
                distribution,largest stephanidae,parasitoids,taxonomy,wasp
                Animal science & Zoology
                distribution, largest stephanidae, parasitoids, taxonomy, wasp

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