Flowering Plants Visited
by Cerceris
nigrescens
Cerceris nigrescens Smith: Sphecidae (Philanthinae), Hymenoptera
(observations are from Graenicher, Reed, and Wilhelm & Rericha)
Asteraceae: Arnoglossum atriplicifolium sn (WR), Aster lateriflorus sn (Gr), Aster macrophyllus sn (Gr), Cirsium arvense sn (Gr), Eupatorium perfoliatum sn (Gr), Solidago canadensis sn (Gr, Re), Solidago juncea sn (Gr), Solidago nemoralis sn (WR); Caprifoliaceae: Symphoricarpos occidentalis sn (Gr); Liliaceae: Allium canadense sn (Gr)