Infested tillers were conspicuously shorter than normal tillers due to severely shortened or completely un-elongated peduncles and internodes of the flag-leaf phytomers. Infested tillers were also easily identified by having panicles that did not fully emerge from the sheath of the flag leaf[.]
”- Arvid Boe, Raymond J. Gagne: (2010) A New Species of Gall Midge (Diptera: Cecidomyiidae) Infesting Switchgrass in the Northern Great Plains©