Cornsilk Fly (suggested common name), Euxesta stigmatias Loew (Insecta: Diptera: Otitidae)
Chaetopsis massyla on a corn leaf.
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Nuessly, Gregg S., and John L. Capinera. 2013. “Cornsilk Fly (suggested Common name), Euxesta Stigmatias Loew (Insecta: Diptera: Otitidae): EENY224/IN381, 4/2013”. EDIS 2013 (5). Gainesville, FL.


‘Cornsilk flies’ are attractive, medium to dark metallic green to black colored flies with distinctive wing patterns and wing flapping behavior. They are commonly found throughout Florida’s agricultural communities. Their normally saprophytic lifestyle belies their destructive nature when it comes to their preference for sweet corn ears. Four species of ‘cornsilk flies’ are known to attack corn in Florida: Chaetopsis massyla (Walker), Euxesta annonae (Fabricius), Euxesta eluta Loew, and Euxesta stigmatias Loew. This 8-page fact sheet was written by Gregg S. Nuessly and John L. Capinera and published by the UF Department of Entomology and Nematology, April 2013.
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App, BA 1938. Euxesta stigmatias Loew, an otitid fly infesting ear corn in Puerto Rico. Journal of Agriculture of the University of Puerto Rico 23: 181-187.

Báez JRC, Gutiérrez CG, Ocampo MM, Bojorquez DA, Pérez EN, Hernández JIV, Guitrón UG. 2012. Enemigos naturales de las moscas de los estigmas del maíz: Euxesta stigmatias (Loew), Chaetopsis massyla (Walker) y Eumecosommyia nubila (Wiedemann) en Guasave Siulaloa, México. Ra Ximhai 8(3) Septiembre - Diciembre. (8 April 2013)

Bertolaccini I, Bouzo C, Larsen N, and Favaro JC. 2010. Especies del género Euxesta Loew (Diptera: Ulidiidae (=Otititae)) plagas de maíces dulces Bt en la provincial de Santa Fe, Argentina. Rev. Soc. Entomol. Argentina 69: 123-126.

Branco MC, Villas Boas GL, Reifschneider FJB, Cruz I. 1994. Evaluation of resistance to Helicoverpa zea (Lepidoptera: Noctuidae)(Boddie) and Euxesta sp. (Diptera: Otitidae) in lines of sweet corn. Anais da Sociedade Entomologica do Brasil 23: 137-140.

Capinera JL. Handbook of Vegetable Pests. Academic Press, San Diego. 729 pp.

Evans DC, Zambrano E. 1991. Insect damage in maize of highland Ecuador and its significance in small farm pest management. Tropical Pest Management 37: 409-414.

Frias D. 1981. Diferencias de microhabitats entre Euxesta eluta y Euxesta annonae (Diptera, Otitidae). Agricultura Tecnica (Chile) 41: 89-94.

Goyal G. 2010a. Morphology, biology, and distribution of corn-infesting Ulidiidae. PhD dissertation, University of Florida.

Goyal G, Nuessly GS, Steck GJ, Seal DR, Capinera JC, Boote KJ. 2010b. New report of Chatopsis massyla (Diptera: Ulidiidae) as a primary pest of corn in Florida. Florida Entomologist 93: 198-202.

Goyal, G, Nuessly GS, Seal DR, Capinera JL, Steck GJ, Boote KJ. 2011a. Distribution of picture-winged flies (Diptera: Ulidiidae) infesting corn in Florida. Florida Entomologist 94: 35-47.

Goyal G, Nuessly GS, Steck GJ, Capinera JC, Seal DR. 2011b. Comparative morphology of the immature stages of three corn-infesting Ulidiidae (Diptera). Annals of the Entomological Society of America 104: 416-428.

Goyal G, Nuessly GS, Seal DR, Steck GJ, Capinera JC, Boote KJ. 2012a. Alternative plants for development of picture-winged fly pests of maize. Entomologia Experimentalis et Applicata 143: 177-184.

Goyal G, Nuessly GS, Seal DR, Steck GJ, Capinera JC, Meagher RL. 2012b. Examination of the pest status of corn-infesting Ulidiidae (Diptera). Environmental Entomology 41: 1131-1138.

Hentz MG, Nuessly GS. 2004. A technique for rearing the sweet corn pest, Euxesta stigmatias (Diptera: Otitidae) on a Helicoverpa diet. Journal of Entomological Science 39: 140-143.

Kalsi M. 2011. Potential predators of corn-infesting picture-winged flies (Diptera: Ulidiidae) in Homestead, Florida: seasonal abundance, distribution and functional response. MS thesis, University of Florida.

Nuessly G, Pernezny K, Stansly P, Sprenkel R, Lentini R. (1999). Florida Corn Insect Identification Guide. (5 April 2013).

Nuessly GS, Hentz MG. 2004. Contact and leaf residue activity of insecticides against the sweet corn pest Euxesta stigmatias Lowe (Diptera: Otitidae). Journal of Economic Entomology 97: 496-502.

Painter RH. 1955. Insects on corn and teosinte in Guatemala. Journal of Economic Entomology 48: 36-42.

Scully BT, Nuessly GS, Beiriger RL. 2000. Resistance in maize to Euxesta stigmatias Loew (Diptera: Otitidae). Journal of Entomological Science. 35: 432-443.

Seal DR, Jansson RK. 1989. Biology and management of corn-silk fly, Euxesta stigmatis Loew (Diptera: Otitidae), on sweet corn in southern Florida. Proceedings of the Florida State Horticultural Society 102: 370-373.

Seal DR, Jansson RK. 1993. Oviposition and development of Euxesta stigmatis (Diptera: Otitidae). Environmental Entomology 22: 88-92.

Seal DR, Jansson RK, Bondari K. 1995. Bionomics of Euxesta stigmatis (Diptera: Otitidae) on sweet corn. Environmental Entomology 24: 917-922.

Seal DR, Jansson RK, Bondari K. 1996. Abundance and reproduction of Euxesta stigmatis (Diptera: Otitidae) on sweet corn in different environmental conditions. Florida Entomologist 79: 413-422.

Steyskal GC. 1965. Family Otitidae, pp 642-654. In Stone A, Sabrosky CW, Wirth WW, Foote RH, Coulson JR [eds.], A Catalogue of the Diptera North of Mexico, vol 276. United States Department of Agriculture, Washingon, DC.

Steyskal GC. 1968. Family Otitida (Ortalidae: including Pterocallidae, Ulidiidae), pp 54.1-54.31. In Vanzolini PE, Papavero N. [eds.], A Catalogue of the Diptera of the Americas South of the United States. Depto Zoologia, Secretaria de Agricultura, Sao Paulo, Brasil.

Steyskal GC. 1974. Euxesta mazorca, new species, associated with ears of maize in South America (Diptera, Otitidae). Proceedings of the Biological Society of Washington 87: 73-76.

Valicente FH. 1986. Ocorrência do parasitóide Dettmeria euxestae Borgmeier, 1935 (Hymenoptera: Eucoilidae) em Euxesta eluta Loew, 1868 (Diptera: Otitidae), naregião de Sete Lagoas, MG. Annais da Sociedade Entomologica fo Brasil 2: 391-392.

Wilkerson JL, Webb SE, Capinera JL. (2005). Vegetable Pests I: Coleoptera - Diptera - Hymenoptera. UF/IFAS CD-ROM. SW 180.

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