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Florida Entomological Society Meeting, March 27, 1931

Florida Entomologist
Publication Date
  • Chemistry


168 Florida Entomologist 97(1) March 2014 SEASONAL TIMING, ABUNDANCE, AND PREDATORY STATUS OF ARTHROPODS ASSOCIATED WITH CORN INFESTED BY PICTURE-WINGED FLIES (DIPTERA: ULIDIIDAE) IN SOUTH FLORIDA M. Kalsi1, D. R. seal1*, G. s. Nuessly2, J. l. CapiNeRa3 aND C. G. MaRtiN1 1University of Florida, Tropical Research and Education Center (TREC), 18905 SW 280th Street, Homestead, FL 33031, USA 2University of Florida, Everglades Research and Education Center, 3200 E. Palm Beach Rd., Belle Glade, FL 33430, USA 3University of Florida, Department of Entomology and Nematology, Bldg. 970, Natural Area Drive, Gainesville, FL 32611, USA *Corresponding author; E-mail: [email protected] abstRaCt Since the 1960s, the USA has led all other countries in the production of sweet corn (Zea mays L.), and Florida has often led the nation, such as from 2004 to 2009. Picture-winged flies, or corn silk flies, including Euxesta stigmatias Loew, E. eluta Loew, E. annonae F., and Chaetopsis massyla Walker (Diptera: Ulidiidae), are serious pests of field and sweet corn in southern Florida. Control has focused on the use of chemical insecticides, but ef- forts have begun to explore other control methods, such as using predatory arthropods. We studied the timing, abundance, identification, and predatory status of ulidiids and other arthropod species associated with corn ears growing in the field in the spring, summer, and fall of 2010. Predators of ulidiids included Orius insidiosus Say (Hemip- tera: Anthocoridae), Anotylus insignitus (Gravenhorst) (Coleoptera: Staphylinidae), Chrysoperla carnea Smith (Neuroptera: Chrysopidae), Zelus longipes (L.) (Hemiptera: Reduviidae), and potentially other arthropod species. Larvae of A. insignitus, C. carnea, and nymphs and adults of O. insidiosus consumed eggs and larvae of ulidiids in labora- tory no-choice tests. Other than ulidiid eggs and/or larvae, O. insidiosus was the most abundant arthropod species in the silking (R1) stage of corn in all 3 seas

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