Two parasitoid tachinids: Archytas marmoratus (Townsed) and Voria ruralis (Fallén) from the State of Coahuila, Mexico attacking two Lepidoptera pests and their parasitoidism level over its host are informed. A parasitoidism level of 8.67% by A. marmoratus on Spodoptera frugiperda (J. E. Smith), and 20.67% by V. ruralis on Trichoplusia ni were recorded.
