Female flies of other species may glue their eggs to the hosts body after which the hatching larva tunnels inside. In other species, eggs are inserted directly into the hosts body by the female. Adults emerge 1 to 2 weeks later. Depending on species one or more generations occur per year. Adults have lapping mouthparts similar to those of houseflies.
Individual species are generally host-specific.
Adult flies can be found while they visit flowers. Immature stages are only found in parasitized host insects. For additional information, contact your local Texas extension service agent, or search for other state extension service offices.