Plant Parasites of Europe

leafminers, galls and fungi

Janetiella tuberculi

Janetiella tuberculi (Rübsaamen, 1889)

on Cytisus

Janetiella tuberculi: gall on Cytisus scoparius

Cytisus scoparius, gall (from Houard, 1909a)


Small, slender, unilateral swelling of a shoot, c. 2 mm long, housing one orange-red larva. Often in numbers, just below a bud, close to the growing point. The larva pupates in the gall, after having prepared a window, closed with a thin membrane, in the top of the gall, by which the midge escapes in the spring.

host plants

Fabaceae, narrowly monophagous

Cytisus scoparius, striatus.


Cecidomyia tuberculi author.


Beguinot (2000b, 2002e, 2003a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Kieffer (1890a, 1891), Redfern & Shirley (2011a), Roskam & Carbonnelle (2015a), Skuhravá & Skuhravý (2021a: 88, 92), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tavares (1905a).

Last modified 18.ix.2021