Pre-pupal emergence hole.
Part of:
Baine Q, Smith DR, Zakopyko B, Dickerson S, Looney C (2022) Host plant and immature stages of
Setabara histrionica
(MacGillivray) (Hymenoptera, Tenthredinidae). Journal of Hymenoptera Research 94: 1-11.
https://doi.org/10.3897/jhr.94.93555