Bagous longitarsis Thomson, 1868
Biology of the larvae unknown. Rheinheimer & Hassler suppose that that larvae bore in the stem and that also pupation takes place there.
In captivity the beetles also fed on Ceratophyllum demersum, but in nature they were never found associated with horn-wort.
distribution within Europe
Behne (1981a), Delbol (2013a), Dieckmann (1983a), Rheinheimer & Hassler (2010a), Yates & Hodge (2000a), Yunakov, Nazarenko, Filimonov & Volovnik (2018a).