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Résumé :
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The Nearctic genus Drepanaphis Del Guercio, 1909 currently includes 16 species with similar morphometric features, and three-dimensional structures may be important in species identification. The form (shape) of the dorsal abdominal tubercles, however, can be distorted by mounting on microscopic slides and this ultimately clouds diagnostic characters. This paper focuses on the identification of three species belonging to the genus Drepanaphis: Drepanaphis acerifoliae (Thomas, 1878), D. kanzensis Smith, 1941 and D. sabrinae Miller, 1937, to show the apparent differences of the structures of the examined individuals based on analysis of material deposited in museum collections and freshly collected material. To verify structural differences more precisely, we used Scanning Electron Microscopy to depict morphological characters accurately and DNA barcoding to analyze individuals at the molecular level.
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