Aphelonyx cerricola (Giraud, 1859)
Quercus cerris, Hungary, Budapest, Kamaraerdő © László Érsek
underside of a gall, taken from the brach
probably this is the larva of A. cerricola
probably an inquiline
detail; the larva resembles an ormyrid, as depicted on Gómez ao; however, in that paper A. cerricola is not mentioned as a host.
Quercus cerris, Belgium, Bruxelles, Ixelles, Jardin du Roy © Bart Uitterhaegen
often several galls together, that may fuse into an irregular mass
the galls are unilocular
roundish, 1.5 cm large gal on a thin branch and somewhat enclosing it. The fresh gall is pale green and felty-hairy, later it turns light brown, smooth, thick-walled and hard. The spacious gall chamber contains (usually) one inner gall, atached at one point.
Fagaceae, narrowly monophagous
Only the agamous generation is known.
Bellmann (2012a), Buhr (1965a), Ceresa (2015a), Chinery (2011a), Gómez, Hernández Nieves, Gayubo & Nieves-Aldrey (2017a), Hellrigl (2009a, 2010a, 2012a), Hellrigl & Bodur (2015a), Katılmış & Kıyak (2008a), Kemal & Koçak (2010a), Kwast (2012a, 2014a), Marković (2015a), Melika (2006a), Melika, Csóka & Pujade-Villar (2000a), Nieves-Aldrey (2001a), Redfern & Shirley (2011a), Williams (2010a).