Plant Parasites of Europe

leafminers, galls and fungi

Janetiella thymi

Janetiella thymi (Kieffer, 1888)

on Thymus


Two types of galls. The flower buds and adjacent bracts may be galled, the flowers remaining closed. Also the topmost two pairs of leaves may enclose a gall chamber; this gall is rotund, c. 5 mm long, not excessively hairy. The inner wall of the gall chambers without mycelium. Larva solitary, reddish yellow, pupates in the ground. Probably two generations.

host plants

Lamiaceae, monophagous

Thymus capitellus, kotschyanus, praecox subsp. polytricus, pulegioides & subsp. chamaedrys + pannonicus, serpyllum, sipyleus, villosus


Cecidomyia thymi.

parasitoids, predators

Torymus thymi.


Béguinot (2002h, 2012a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), de Vere Graham & Gijswijt (1998a), Houard (1909a), Kieffer (1888a), Mirumian (2011a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skuhravá & Skuhravý (1994a, 1997a,b, 1999a,b, 2010a,b, 2021a: 280), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý & Buhr (2013a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Hellrigl (2001a, 2002a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Sylvén (1983a), Tavares (1905a), Tomasi (2003a, 2012a, 2014a).

Last modified 9.v.2022