Phytomyza montana Groschke, 1957
Exceptionally long, upper-surface corridor, very narrow at first, gradually widening. In the end the corridor may traverse a large leaf, crossing itsself now and then. Frass very variable, either in pearl chains of tiny granules or in large, widely dispersed grains. Pupation outside the mine, exit slit in upper epidermis.
Maček (1999a) adds: Centaurea nigrescens subsp. vochinensis and Cyanus triumfettii.