A single release of higher numbers of parasites may be appropriate, especially during the period of peak fly production in early summer in areas where subsequent drying and higher temperatures generally result in lower fly populations during mid-summer. However, several releases of fewer parasites may result in better overall fly control where continuous fly development occurs. Also, releases at 2-3 week intervals result in a more uniform population of parasites over a given period. This wasp species is gregarious (several parasite wasps develop within a single insect) and can be reared at much lower cost than other solitary (one wasp develops in each host insect) wasp species (Spalangia nigroaenea, S. endius, Muscidifurax raptor, M. zaraptor or Pachycrepoideus vindemiae). Also it is aggressive in searching out potential hosts. These characteristics make this species potentially an important parasite for commercial parasite producers.
Source: J. J. Petersen & D. M. Currey. 1996. Timing of releases of gregarious Muscidifurax raptorellus to control flies associated with confined beef cattle. J. Agric. Entomol. 13: 55-63.