VERVAIN-STEM-GALL-MIDGE Neolasioptera sp. Pl. 582
The integral stem galls of this midge occur just below the flowers ... [Measuring] 30 mm. long by 10 mm. wide [, t]hey are distinguished by the prominent raised vertical ridges [which] connect[ ] to new shoots ...
”- Russo, Ronald A. : (2021) Plant Galls of the Western United States©