Florida Department of Agriculture and Consumer Services

Gary J. Steck, Curator: Diptera (Tephritidae) (also misc. minor orders)

Curatorial Responsibilities

  • Identification of Diptera and minor orders at the Florida State Collection of Arthropods.
  • Training of Florida Department of Agriculture and U.S. Department of Agriculture personnel, especially in fruit fly detection.
  • Oversight of the FSCA Research Associate Program.


  • Employed at the FSCA since 1991.
  • Associate Editor (taxonomy) for the Florida Entomologist since 1991.

Research Interests

  • Population genetics and cryptic species complexes of the family Tephritidae.
  • Development of a database of mitochondrial DNA markers among worldwide populations of Mediterranean fruit fly to determine colonization routes and population dynamics of this pest.
  • Improving capabilities for identification of fruit fly larvae using morphological and isozyme characters.
  • Faunistics: Tephritidae of Florida, checklist of Florida Diptera, Tephritoidea of Great Smoky Mountains National Park.


  • Steck, G.J. 1984Chaetostomella undosa (Diptera: Tephritidae): biology, ecology and larval description. Annals Entomological Society America 77: 669-678.
  • Friedlander, T.P., R.A. Wharton and G.J. Steck. 1985. New records of Agromyzidae and their braconid parasitoids from Texas. Southwestern Entomologist 10: 257-263.
  • Steck, G.J., F.E. Gilstrap, R.A. Wharton and W.G. Hart. 1986. Braconid parasitoids attacking fruit flies (Diptera: Tephritidae) in coffee and other fruits in West-Central Africa. Entomophaga 31: 59-67.
  • Steck, G.J. and R.A. Wharton. 1986. Descriptions of immature stages of Eutreta (Diptera: Tephritidae). Journal Kansas Entomological Society 59: 296-302.
  • Steck, G.J. and R.A. Wharton. 1988. Description of immature stages of Anastrepha interruptaA. limae and A. grandis (Diptera: Tephritidae). Annals Entomological Society America 81: 994-1003.
  • Steck, G.J. and A. Malavasi. 1988. Description of immature stages of Anastrepha bistrigata. (Diptera: Tephritidae). Annals Entomological Society America 81:1004-1009.
  • Steck, G.J., G.L. Teetes and S. Maiga. 1989. Species composition and injury to sorghum by panicle feeding bugs in Niger. Ins. Sci. Appl. 10: 199-217.
  • Steck, G.J., L.E. Carroll, H. Celedonio-H. and J. Guillen-A. 1990. Methods for identification of Anastrepha larvae (Diptera: Tephritidae), and key to 13 species. Proceedings Entomological Society Washington 92: 356-369.
  • Steck, G.J. 1990. Biochemical systematics and population genetic structure of Anastrepha fraterculus (Wiedemann) and related species (Diptera: Tephritidae). Annals Entomological Society America 84: 10-28.
  • Sheppard, W.S., G.J. Steck and B.A. McPheron. 1992. Geographic populations of the medfly may be differentiated by mitochondrial DNA variation. Experientia 48: 1010-1013.
  • Steck, G.J. and W.S. Sheppard. 1993. Mitochondrial DNA variation in Anastrepha fraterculus, pp. 9-14 in: Fruit Flies: Biology and Management. M. Aluja & P. Liedo (eds.). Springer Verlag.
  • Steck, G.J. and J.A. Payne. 1993. Blueberry maggot, Rhagoletis mendax. Entomology Circular No. 358, Florida Department Agriculture & Consumer Services, 2 pp.
  • Sutton, B.D. and G.J. Steck. 1994. Identification of Caribbean and Mediterranean fruit fly larvae (Diptera: Tephritidae) by cuticular hydrocarbon analysis. Florida Entomologist 77: 231-237.
  • McPheron, B.A., G.E. Gasparich, H-Y. Han, G.J. Steck and W.S. Sheppard. 1994. Mitochondrial DNA restriction map for the Mediterranean fruit fly, Ceratitis capitata. Biochemical Genetics 32: 25-33.
  • Steck, G.J. 1994. Book Review: Foote, R.H., L. Blanc and A.L. Norrbom, Handbook of the Fruit Flies (Diptera: Tephritidae) of America North of Mexico. Quarterly Review of Biology 69: 530-531.
  • Steck, G.J. 1994. Florida bee killers: Mallophora (Diptera: Asilidae). Entomology Circular No. 366, Florida Dept. Agric. Cons. Serv. 2 pp.
  • McPheron, B.A., W.S. Sheppard and G.J. Steck. 1995. Genetic research and the origin, establishment, and spread of the Mediterranean fruit fly, pp. 93-107 in: Proceedings: The Medfly in California: Defining Critical Research, J.G. Morse, R.L. Metcalf, J.R. Carey and R.V. Dowell (eds.). Univ. Calif. Center for Exotic Pest Research, Riverside.
  • Steck, G.J. 1995. The number of indigenous species of Tephritidae reported from Florida, p. 32 in: Precinctive insect species in Florida, Behavioral Ecology Symposium, J.H. Howard & E.D. McCoy (eds.), Florida Entomologist 78: 22-35.
  • Gasparich, G.E., W.S. Sheppard, H-Y. Han, B.A. McPheron, and G.J. Steck. 1995. Analysis of mitochondrial DNA and development of PCR-based diagnostic molecular markers for Mediterranean fruit fly, Ceratitis capitata populations. Insect Molecular Biology 4(1): 61-67.
  • Steck, G.J. 1995. Book Review: Gagne, R.J. 1994. The Gall Midges of the Neotropical Region. Florida Entomologist 78: 190-191.
  • Steck, G.J., P.M. Lyrene and J.A. Payne. 1995. Blueberry gall midge. Entomology Circular No. 373, Florida Dept. Agric. Cons. Serv. 2 pp.
  • Steck, G.J., G.E. Gasparich, H-Y. Han, McPheron, B.A., and W.S. Sheppard. 1996. Distribution of mitochondrial DNA haplotypes among Ceratitis capitata populations worldwide, pp. 291-296 in: B.A. McPheron & G.J. Steck (eds.) Fruit Fly Pests: A World Assessment of Their Biology and Management. St. Lucie Press, Boca Raton FL.
  • McPheron, B.A. and G.J. Steck (eds.) 1996. Fruit Fly Pests: A World Assessment of Their Biology and Management. St. Lucie Press, Boca Raton. xxii + 586 pp.
  • Steck, G.J. 1996. Pea leaf miner, Liriomyza huidobrensis (Diptera: Agromyzidae). Entomology Circular No. 378, Florida Dept. Agric. Cons. Serv. 3 pp.
    Clark, R.A., G.J. Steck and H.V. Weems, Jr. 1996. Detection, quarantine, and eradication of fruit flies in Florida, pp. 29-54 in: D.Rosen, F.D. Bennett & J.L. Capinera (eds.). Pest Management in the Subtropics: Integrated Pest Management - A Florida Perspective. Intercept Ltd., Andover, UK.
  • Sutton, B.D. and G.J. Steck. 1997. Discrimination of fruit-fly larvae (Diptera: Tephritidae) by cuticular hydrocarbon analysis: Bactrocera Macquart species established in the New World and Hawaii. Mem. Entomol. Soc. Washington 18: 243-253.
  • Condon, M.A. and G.J. Steck. 1997. Evolution of host use in Blepharoneura (Diptera: Tephritidae): multiple cryptic species on sexually dimorphic host plants. Biol. J. Linnaean Soc. 60: 443-466.
  • Ahlmark, K. and G.J. Steck. 1997. A new U.S. record for a secondary fruit infester, Neosilba batesi (Curran) (Diptera: Lonchaeidae). Insecta Mundi 11:20.
  • Gasparich, G.E., J. Silva, H-Y. Han, B.A. McPheron, G.J. Steck and W.S. Sheppard. 1997. Population genetic structure of Mediterranean fruit fly (Diptera: Tephritidae) and implications for worldwide colonization patterns. Annals Entomological Society America 90(6): 790-797.
  • Steck, G.J. 1998. Book Review: White, I.A. and D.L. Hancock. 1997. Indo-Australasian Dacini Fruit Flies. (Computer Aided Biological Identification Key). Florida Entomologist 81: 127-129.
  • Steck, G.J. 1998. Mexican fruit fly, Anastrepha ludens (Loew) (Diptera: Tephritidae). Entomology Circular No. 391, Nov/Dec 1998, Florida Dept. Agric. Cons. Serv. 2 pp.
  • Steck, G.J. 1999.Taxonomic status of Anastrepha fraterculus, pp. 13-20 in, The South American fruit fly, Anastrepha fraterculus (Wied.); advances in artificial rearing, taxonomic status and biological studies, IAEA-TECDOC-1064, International Atomic Energy Agency, Vienna, 202 pp.
  • Steck, G.J. and B.D Sutton. 2000. New Records for Tephritidae (Diptera) in Great Smoky Mountains National Park. Insecta Mundi 14: 256.
  • Steck, G.J. 2001. Book Review: Fruit Flies (Tephritidae): Phylogeny and Evolution of Behavior. Martín Aluja and Allen L. Norrbom, editors. 1999. Proceedings Entomological Society Washington 103: 457-466
  • Steck, G.J. 2000. Ceratitis cosyra (Walker) (Diptera:Tephritidae). Entomology Circular No. 403, Nov/Dec 2000, Florida Dept. Agric. Cons. Serv. 2 pp.
  • Steck, G.J. 2001. Concerning the occurrence of the West Indian fruit fly in Florida. Florida Entomologist 84: 320-321.
  • Steck, G.J. 2001. Fruit fly Pests. Brochure, Florida Department of Agriculture & Consumer Services, Division of Plant Industry. 2 pp.