Phytomyza aposeridis Groschke, 1957
Initially a very fine, upper- or lower-surface corridor. It comntinues in an exceptionally long, finally rather broad, upper-surface corridor. The corridor can be branched; the sides are irregularly scalloped. Often the corridor follows the leaf margin for some distance. Frass in tiny, scarce, very widely spaced grains. Pupation outside the mine; exit slit in upper epidermis.
Larvae in July.
distribution within Europe
Described from southern Germany; recorded from Slovenia by Maček (1999a).
Black, segment limits unclear. Anterior spiracula on short horns, indistinctly bifid, with 16-18 papillae. Posterior spiracula widely separated on a common base, indistinctly bifid, with 25-30 papillae (Groschke, 1957a).
Griffiths (1977a), Hering (1957a), Groschke (1957a), Huber (1969a), Maček (1999a), von Tschirnhaus (1999a).