willow gall (wilogal)

Any one of numerous galls upon willow-shoots and -leaves, made mainly by gall-midges ( Ceci domyiidæ), but often by gall-making sawflies of the genera Evura and Nematus. Examples of the former are the pine-cone willow gall of Cecidomyia strobi loides and the cabbage sprout willow-gall of Ce cidomyia salic is -bra i coides. Examples of those made by saw-flies are the willow apple-gall of Ne mat us salic is - pomum, the willow egg-gall of Evura salic is - ovum, and the willow bud-gall of Evura sa licis -gemma. Cabbage-sprout Willow-gall.