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The species of   N ecremnus  attacking two invasive pests of tomato and canola in  E urope and  N orth  A merica, respectively,   T uta absoluta  ( M eyrick) ( L epidoptera:  G elechiidae) and   C eutorhynchus obstrictus  ( M arsham) ( C oleoptera:  C urculionidae), have been revised using an integrative taxonomy approach. Molecular data from the mitochondrial cytochrome oxidase  c  subunit I and the nuclear  D2  expansion region of the  28 S ribosomal subunit and internal transcribed spacer 2, the discovery of new morphological features, and study of type material resulted in the delineation of three species groups, the   N ecremnus artynes ,   N ecremnus cosconius , and   N ecremnus tidius  groups, the discovery of four new species, and the resurrection of three taxa from synonymy. Lectotypes have been designated for 13 species originally described in   E ulophus  by  W alker. Although   N ecremnus  has not been revised, an illustrated key is given to differentiate 23 recognized  E uropean species. The key, type images, and treatments of the three species groups will enable more accurate identification of the valid species of   N ecremnus  in the future. They will also benefit biological control practitioners of pest species. The ecological consequences of the new taxonomic concepts are discussed. © 2015 The Authors. Zoological Journal of the Linnean Society published by John Wiley &amp; Sons Ltd on behalf of The Linnean Society of London

zoological journal of the linnean society

An integrative study of   N ecremnus   T homson ( H ymenoptera:  E ulophidae) associated with invasive pests in  E urope and  N orth  A merica: taxonomic and ecological implications