In this paper, one species of DiaparsisFörster ( D.splendensHorstmann) is recorded and two species of PhradisFörster ( P.bufalosus sp. n.and P.nanacamilpus sp. 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 of Phradisis given. Colour photographs and morphological remarks on D.splendensare provided.