Intertaxon relationships
species
Brown Knapweed
Centaurea jacea L.
Ceratapion armatum (Gerstäcker, 1854)
Cortodera villosa Heyden, 1876 
Larinus longirostris Gyllenhal, 1835
Larinus sturnus (Schaller, 1783)
Pseudorchestes pratensis (Germar, 1821)
consumer (larval stage only)
Pseudocleonus grammicus (Panzer, 1789)