Dipsacus fullonum, Belgium, Liège: old mine; © Jean-Yves Baugnée
detail, to show the feeding lines
Dipsacus fullonum, Schinnen-Thull (li) © Wouter Bosgra
Blotch, invariably beginning at the leaf margin, widening fast and strongly, giving the mine a funnel-like shape. Primary and secondary feeding lines very conspicuous. Frass in large grains. The larvae leaves the mine before pupation; according to Spencer (1954a) the exit slit is in the lower epidermis.
Dipsacus fullonum, pilosus.
Larvae in May-June, in a single generation (Hering, 1957a).
BE recorded (Ellis).
NE recorded (Wouter Bosgra, 2014).
LUX not recorded (Fauna Europaea, 2007).
From the UK to France and Hungary (Fauna Europaea, 2007).
Rear spiraculum witth about 40 papillae (Groschke, 1957a; Hering, 1957a).
De Meijere (1926a) described a larva of an unidentified Agromyza, bred from Knautia. Later (1928a) he wrote he had managed to identify the species as A. dipsaci. This is not correct: the species in question is A. woerzi.
Černý & Vála (1999a), Groschke (1957a), Hering (1957a), Huber (1969a), Papp & Černý (2015a), Robbins (1991a), Spencer (1954a, 1957a, 1972a), Starý (1930a), von Tschirnhaus (1999a).