Flowering Plants Visited
by Ectemnius
decemmaculatus
Ectemnius decemmaculatus Say: Sphecidae (Crabroninae), Hymenoptera
(observations are from Robertson, Graenicher, and Wilhelm & Rericha)
Apiaceae: Cicuta maculata sn fq (Rb), Eryngium yuccifolium sn (Rb), Heracleum maximum sn fq (Rb), Pastinaca sativa sn (Rb), Perideridia americana sn (Rb), Polytaenia nuttalli sn (Rb), Thaspium trifoliatum flavum sn (Rb), Zizia aurea sn (Rb); Asteraceae: Aster pilosus sn (Rb), Aster prenanthoides sn (Gr), Eupatorium perfoliatum sn (Rb, Gr, WR), Eupatorium serotinum sn (Rb), Euthamia graminifolia sn (Rb, Gr), Solidago canadensis sn (Rb, Gr, WR), Solidago juncea sn (Gr); Lamiaceae: Pycnanthemum tenuifolium sn fq (Rb); Rosaceae: Potentilla simplex sn (WR)