Pensoft Publishers, Journal of Hymenoptera Research, (58), p. 17-27, 2017
DOI: 10.3897/jhr.58.12919
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Two species of ichneumon wasps (Ichneumonidae),Gelanes horstmanniKhalaim,sp. n.(Tersilochinae) andIdiogramma elbakyanaeKhalaimsp. n.(Tryphoninae), are described from the pine forest at 2800–2900 m from the State of Tlaxcala in Central Mexico; a third species,I. comstockii(Ashmead), is found to occur in the State of Nuevo León in Northeast Mexico. The generaGelanesHorstmann andIdiogrammaFörster are associated with xyelid sawflies (Xyelidae), and both, as well as the tryphonine tribe Idiogrammatini, are recorded from Mexico for the first time. An identification key to the twoIdiogrammaspecies occurring in Mexico is provided.