Abstract
Abstract Limited biological information about Phyllophaga ephilida, a major sweet potato pest in Louisiana, is available. In 2001 and 2002, a study was conducted in the laboratory to investigate the feeding preference of adult Phyllophaga ephilida (Say) (Coleoptera: Scarabaeidae) for the foliage of eight woody plant species: water oak (Quercus nigra L.), live oak (Quercus virginiana Mill.), red maple (Acer rubrum L.), slash pine (Pinus caribaea Morelet), pecan (Carya illinoensis (Wangenh) K. Koch), sweetgum (Liquidambar styraciflua L.), southern magnolia (Magnolia grandiflora L.), and American elm (Ulmus americana L.). Beetles were placed in an arena with the eight host plants and allowed to feed for 24 h (choice test). Leaf area consumed and change in leaf weight were recorded. In 2001 and 2002, host plant had a significant effect on both leaf area and weight consumed. In 2001, mean leaf area (mm2) consumed was pecan (504), followed by elm (314), water oak (237), maple (176), live oak (38.0), and sweetgu...
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