Cabbage Gall Midge Pl. 383
Contarinia sp.
The polythalamous, round, axillary bud gall of this midge appears at swollen stem nodes on box-thorn in spring. New galls have a round central larval chamber with an extremely hard, 1 mm thick outer shell surrounded by broad, hairy, leafy, bracts that resemble cabbage leaves.
Host:
Lycium cooperi
- Russo, Ronald A. : (2021) Plant Galls of the Western United States©