"...the opening of the adult exit is located in the middle one-third of the gall slightly above midgall." [rather than the upper third]
"No bung is made; only intact plant epidermis caps the finished exit. Caps are translucent when the exit sides of bisected galls are held up to a lamp."
"Discounting minor irregularities, the galls are vertically symmetrical."
- William E. Miller: (2000) A Comparative Taxonomic-Natural History Study of Eight Nearctic Species of Gnorimoschema that Induce Stem Galls on Asteraceae, Including Descriptions of Three New Species (Lepidoptera: Gelechiidae)©