Massalongia

Massalongia is a genus of flies in the family Cecidomyiidae. The larvae induce galls on birches.

Species
The following six species have been described in this genus:
 * Massalongia altaica Fedotova, 1990
 * Massalongia bachmaieri Möhn, 1954
 * Massalongia betulifolia Harris, 1974
 * Massalongia nakamuratetsui Elsayed & Tokuda 2020
 * Massalongia papyrifera (Gagné, 1967)
 * Massalongia rubra (Kieffer, 1890)