Aculus convolvuli (Nalepa, 1891)
on Convolvulus
Convolvulus arvensis, Wijk aan Zee, 25.vi.2020 ©
Cor Zonneveld
the top gall on this picture is roughly hairy, the lower to seem smooth
Convolvulus arvensis, Bloedbergduin, 19.vii.2011 © Jan Scheffers

Convolvulus arvensis, Belgium, prov Namur, Couvin, Dailly, 24.vi.2014 © Pascal Hauteclair & Sébastien Carbonnelle
hostplants
Convolvulaceae, oligophagous
Convolvulus arvensis.
parasite
Galls like the ones illustrated above are attributed in the literature alternately to Aceria convolvuli and Acululus convolvuli. The Aceria galls would be hairless, but that does not seem a reliable character. Also a third species, viz. Aceria malherbae, is reported to cause identical galls. Because in actual practice the galls cannot be named by an identification of the responsible gall mites, they are lumped here, in accordance with Redfern & Shirley, under Aculus convolvuli.
synonyms
Phyllocoptes, Vasates, convolvuli.
references
Boczek & Petanović (1996a), Bohinc & Trdan (2013a) Slovenia, Buhr (1964b), Dauphin & Aniotsbehere (1997a), Houard (1909a), Mifsud, Monfreda & de Lillo (2007a), Farkas (1965a), Redfern & Shirley (2011a), Ripka (2007a), Roskam (2009a), Skoracka, Lewandowski & Boczek (2005a).