Bagous longitarsis Thomson, 1868
on Myriophyllum
parasite
Biology of the larvae unknown. Rheinheimer & Hassler suppose that that larvae bore in the stem and that also pupation takes place there.
host plants
Haloragaceae, monophagous
Myriophyllum verticillatum.
In captivity the beetles also fed on Ceratophyllum demersum, but in nature they were never found associated with horn-wort.
distribution within Europe
references
Behne (1981a), Delbol (2013a), Dieckmann (1983a), Rheinheimer & Hassler (2010a), Scholze (1991a), Yates & Hodge (2000a), Yunakov, Nazarenko, Filimonov & Volovnik (2018a).