Janetia homocera (Löw, 1877)
on Quercus
Quercus cerris, Hongarije, Budapest © László Érse
underside of the leaf
gall, upperside
gall, underside
a single gall in side view
gall
About 5 mm large, hard gall in the leaf disk, protruding cone-like at both sides. The upper part is rather low, smooth, with a central nipple. The lower part is much higher, covered by a dense felt. At maturity the lower part drops off. Often several gall is a leaf. Larva solitary, red, pupates in the soil.
hostplants
Fagaceae, narrowly monophagous
Quercus cerris, ithaburensis, trojana.
larva
see also Skuhravý & Skuhravá (1971a)
prosternum with spatula (from Möhn, 1955a)
synonyms
Arnoldia homocera.
references
Braggion (2013a), Buhr (1965a), Csóka (2012a), Gagné (2010a), Hellrigl (2010a), Houard (1908a), Möhn (1955a), Schremmer (1991a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skuhravá & Skuhravý (1994a, 1997b, 1999a), Skuhravá, Skuhravý & Dengler (1997a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Massa (2007a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravý & Skuhravá (1971a), Stănescu (2009a).