Relating to or belonging to the Cecidomyiidae family of tiny flies (gall midges) known for creating plant galls.
From Cecidomyiidae, the family name of gall midges; -ian is a suffix meaning 'relating to' or 'belonging to'.
Cecidomyian flies are so small you'd need a microscope to see them properly, yet they're some of the most powerful plant-manipulators on Earth—their larvae can cause galls worth millions of dollars in crop damage.
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