Laboratory Rearing and Niche Resources of Pseudacteon spp. Coquillett (Diptera: Phoridae) Parasitoids of Solenopsis saevissima (Smith) (Hymenoptera: Formicidae)

<em>Solenopsis saevissima</em><span> (Smith) is associated with a group of nine </span><em>Pseudacteon</em><span> Coquillett species in Brazil.</span><em>Pseudacteon affinis</em><span> Borgmeier, </span><em>Pseudacteon dentiger</em><span> Borgmeier and </span><em>Pseudacteon disneyi</em><span> Pesquero were created in a laboratory from parasitized workers of </span><em>S. saevissima</em><span>. The other phorid species grew only until the pupa phase due to low temperature and humidity when kept in a climatic chamber. </span><em>Pseudacteon cultellatus</em><span> Borgmeier was more efficient than the other species, taking 12 days to kill the host workers. Similar to the group of phorid species parasitizing</span><em>Solenopsis invicta</em><span> Buren, the daily period of activity and body size are important factors to be considered in the use of these natural enemies in future programs of biological control of </span><em>S. saevissima</em><span>.</span>

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