Lixus iridis Olivier, 1807
The larva lives in the hollow stem. Here also pupation takes place, in a pupal cocoon. Sometimes this results in a weak fusiform swelling of an internodium.
According to Rheinheimer & Hassler, cow parsley is the main host plant. Galls have been cited only from hogweed.
larva (from Zotov)
Balalaikins & Bukejs (2011a), Buhr (1964a), Dauphin & Aniotsbehere (1997a), Dieckmann (1983a), Friedman (2018a), Germann (2017a), Houard (1909a), Rheinheimer & Hassler (2010a), Sprick, Schmidt & Gärtner (2013a), Tomasi (2014a), Zotov (2009a).