In this paper, one species ofDiaparsisFörster (D.splendensHorstmann) is recorded and two species ofPhradisFörster (P.bufalosussp. n.andP.nanacamilpussp. n.) are described from Mexico. Both genera are extremely rare in the Mexican fauna, being represented by single specimens from a large amount of ichneumonids examined in many Mexican and USA collections. A partial identification key to North American species ofPhradisis given. Colour photographs and morphological remarks onD.splendensare provided.