Rhopalomyia (genus - weed bioagents)
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Rhopalomyia (weed bioagents) Rubsaamen, 1892
This genus of gall midges contains more than 250 species which infest mainly plants from the family of Asteraceae. Several are considered pests (see Rhopalomyia as crop pests), but many are beneficial as biological control agents of weeds. These breed on weed genera like Artemisia, Baccharis, or Solidago.
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: