Citrus Gall Midge, Prodiplosis longifila Gagné (Insecta: Diptera: Cecidomyiidae) ( Publisher's URL )

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Citrus Gall Midge, Prodiplosis longifila Gagné (Insecta: Diptera: Cecidomyiidae)
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Peña, Jorge E.
University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
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Gainesville, Fla.
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Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
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"Published: June, 1998. Revised: January 2007. Reviewed July 2010."
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Prodiplosis longifila 1 J. E. Pea and F. W. Mead2 1. This document is EENY-035 (IN162) (originally published as DPI Entomology Circular 312), one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. This document is also available on Featured Creatures Website at Published: June, 1998. Revised: January 2007. Reviewed July 2010. Please visit the EDIS Website at 2. J. E. Pea and F. W. Mead, Entomology and Nematology Department, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611. The citrus gall midge, Prodiplosis longifila Gagn was first found in Florida by Rainwater (1934). This gall midge was collected on lime trees, Citrus aurantifolia (Christm.) Swingle, at Homestead, Dade Co., Florida during the fall of 1984 by the senior author. The adult was described in 1986 by R.J. Gagn. Gagn (1986) reported P. longifila from Florida, South America, and the West Indies. The adult midge is a small, black-yellowish fly about 1.5 mm in length. The wing lengths average 1.42 mm in males and 1.53 mm in females. The antenna lengths average 1.62 mm in males and 1.22 mm in females. The eggs are small, clear, about 0.27 mm in length. The larva is almost transparent when newly formed and yellowish during the last instar. A full grown larva is about 1.9 mm in length. The pupa is light yellowish when newly formed and black and yellowish near adult emergence. Eggs hatch in one to two days. Larval development requires eight to 12 days. The larvae drop to the ground where the pupal stage is passed. The pupal stage lasts four to five days, and adults typically live 1-2 days. Gagn (1986) has provided a key to adults of Nearctic species of Prodiplosis. Eggs (upper right), larva (lower left), pupa (lower right) and adult (upper left) citrus gall midge Prodiplosis longifila Gagn. Credits: Rita Duncan, University of Florida


Citrus Gall Midge, Prodiplosis longifila Gagn (Insecta: Diptera: Cecidomyiidae) 2 This insect is known from limes, Citrus aurantifolia; tomatoes, Lycopersicon esculentum; potatoes, Solanum tuberosum, and wild cotton, Gossypium sp., etc. The larva of P. longifila is a pest of limes (Pena et al. 1987). In 1984, heavy infestations were encountered attacking lime groves in Dade and Collier counties. Larvae feed on flowers, damaging the epidermal cells of the ovary, pistils, and stamens. The mean number of larvae found per flower was 24.26. Look for flowers with necrosed ovary, stamens, and petals. Where infestations are heavy there may be excessive flower drop. Control information is very limited for this pest. If control appears to be necessary contact your local county Cooperatiave Extension Service Agent. Gagn, R.J. 1986. Revision of Prodiplosis (Diptera: Cecidomyiidae) with description of three new species. Annals of the Entomological Society of America 79:235-245. Pena, J.E., R.M. Baranowski, and R.T. McMillan, Jr., 1987. Prodiplosis longifilia (Diptera:Cecidomyiidae), a new pest of citrus in Florida. Florida Entomologist 70:527-529. Pena, J.E., R. Gagn and R. Duncan. 1989. Biology and Characterization of Prodiplosis longifila Gagn (Diptera:Cecidomyiidae) on Lime in Florida. Florida Entomologist 72: 444-450.. Rainwater, C.F. 1934. Insects and a mite of potential economic importance found in wild cotton in Florida. Journal of Economic Entomology 27:756-761.