Crataegus monogyna, Belgium, prov. Namur, Viroinval, Treignes © Stéphane Claerebout

gall

leaves pale yellowish green, curled; often partly pink, but never with a sharp demarcation between green and red. The aphids are greenish or grey, covered by powdery wax; de feet are dark. Cauda short, rounded.

host plants

Rosaceae, monophagous

Crataegus laevigata, monogyna.

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on Ranunculus, secondary host plant

parasite

Apterae ± 2 mm, mottled grey-green, brownish around siphuncular bases, wax-dusted; at the stem base and at the roots.

host plants

Ranunculaceae, monophagous

Ranunculus arvensis, bulbosus, cassibucus, muricatus, platanifolius, polyanthemos subsp. nemorosus, repens, sardous.

synonyms

Dysaphis ranunculi bulbosi (Börner, 1950).

references

Blackman & Eastop (2014), Buga & Stekolshchikov (2012a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Dransfield & Brightwell (2015a), Durak, Durak & Borowiak-Sobkowiak (0000a, 2011a), influential points (2015), Lambinon, Carbonnelle & Claerebout (2015a), Heie (1992a), Lampel & Meier (2007a), Osiadacz & Wojciechowski (2008a), Petrović (1998a), Redfern & Shirley (2011a), Tambs-Lyche (1970a), Tomasi (2014a), Wilkaniec & Piekarska-Boniecka (2008a), Wojciechowski, Depa, Halgoš ao (2016a).