Diabrotica undecimpunctata howardi Barber (adult = spotted cucumber beetle, immature = southern corn rootworm, Coleoptera: Chrysomelidae) is a polyphagous pest found on a broad range for agricultural plants (Krysan 1986). The larvae are root feeders commonly found on plants in the families Cucurbiaceae (gourds and squashes), Poaceae (grasses, including Zea mays L.), and Fabaceae (legumes, including Medicago sativa L.), and can have significant impact on the crop yield depending on the agricultural system (Campbell and Emery 1967, Brust and House 1990).
Marshall, Jordan M.
"Occurrence of Diabrotica Undecimpunctata Howardi Barber (Coleoptera: Chrysomelidae) Feeding on Cirsium Pitcheri Flowers,"
The Great Lakes Entomologist: Vol. 46
, Article 11.
Available at: https://scholar.valpo.edu/tgle/vol46/iss1/11