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Rhopalomyia (crop pests) Rubsaamen, 1892
This genus of gall midges contains more than 250 species which infest mainly plants from the family of Asteraceae. A number of species are beneficial as biological control agents of weeds, see Rhopalomyia (weed bioagents). However, several infests crops like the chrysanthemum gall midge, Rhopalomyia longicauda. This group is covered here.
The adults of the genus are characterized by the structure of the female ovipositor which can be extended and by an elongated 8th abdominal tergite. Pupation always takes place inside the gall.
Type species: Rhopalomyia tanaceticola
Currently, the following species have been entered into the system: