Aphis janischi (Börner, 1940)
on Cirsium
parasite
Apterae 2-3 mm, black, wax-dusted. At the base of the stem, also in the leaf axils on top of the midrib.
host plants
Asteraceae, narrowly monophagous
Cirsium oleraceum.
Rarely Cirsium arvense.
synonyms
Morphologically indistinguishable from Aphis fabae, therefore possibly synonymous with A.f. cirsiiacanthoidis (Blackman & Eastop).
references
Blackman & Eastop (2017), Börner & Franz (1956a), Heie (1986a), Müller & Horatschek (1980a), Osiadacz & Wojciechowski (2008a), Wojciechowski, Depa, Halgoš ao (2016a).