Pegomya centaureae Hennig, 1973
on knapweed
mine
Large blotch witch conspicuous primary and secondary feeding lines, preceded by a narrow, upper- or lower-surface corridor. The corridor begins at an elliptic egg shell glued to the leaf. Frass in the corridor in many fine grains, close together and sometimes coalescing; in the blotch the grains are larger and dispersed. Pupation external.
host plants
Asteraceae, narrowly oligophagous
Centaurea stoebe, vallesiaca; Cyanus montanus, triumfettii.
phenology
Larvae in July (Hering, 1957a).
distribution within Europe
Spain, southern Germany, Switzerland, Italy, Croatia, Slovenia.
larva
Rear spiraculum with three papillae.
synonyms
Pegomya centaureae Hering, 1957; Pont & Ackland (2009a) discuss the confusing nomenclature.
notes
The Fauna Europaea (2011) states that Hennig originally placed his species in the genus Pegohylemyia (=Botanophila); therefore the species is listed there within Botanophila. Actually, Hennig described the species as Pegomya centaureae. (Thanks to Charles Godfray for pointing this out to me).
references
Hering (1957a), Maček (1999a), Müller (1989a), Pont & Ackland (2009a).