G. C.  Steyskal, ?A curious habit of an empidid fly?, Bulletin of the Brooklyn Entomological Society, vol. 36, p. 117, 1941.

G. C.  Steyskal, ?New species of Empididae of the genera Empis, Hilara, and Hormopeza from Georgia, with a synopsis of the North American species of Hormopeza?, Annals of the Entomological Society of America, vol. 62, no. 2, pp. 292-299, 1969.

G. C.  Steyskal and Knutson, L. V., ?Chapter 47. Empididae?, in Manual of Nearctic Diptera, vol. 1, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1981, pp. 607-624.

G. C.  Steyskal, ?Chapter 86. Sepsidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 945-950.

G. C.  Steyskal, ?Chapter 85. Ropalomeridae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 941-944.

G. C.  Steyskal, ?Chapter 83. Dryomyzidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 923-926.

G. C.  Steyskal, ?Chapter 67. Richardiidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 833-837.

R. H.  Foote and Steyskal, G. C., ?Chapter 66. Tephritidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 817-831.

G. C.  Steyskal, ?Chapter 65. Pyrgotidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 813-816.

G. C.  Steyskal, ?Chapter 64. Platystomatidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 809-812.

G. C.  Steyskal, ?Chapter 63. Otitidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 799-808.

G. C.  Steyskal, ?Chapter 60. Psilidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 781-784.

G. C.  Steyskal, ?Chapter 59. Strongylophthalmyiidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 777-779.

G. C.  Steyskal, ?Chapter 58. Tanypezidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 773-776.

G. C.  Steyskal, ?Chapter 57. Neriidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 769-771.

G. C.  Steyskal, ?Chapter 56. Micropezidae?, in Manual of Nearctic Diptera, vol. 2, J. F.  McAlpine, Peterson, B. V., Shewell, G. E., Teskey, H. J., Vockeroth, J. R., and Wood, D. M., Eds. Ottawa: Research Branch, Agriculture Canada, 1987, pp. 761-767.

G. C.  Steyskal, ?A new species of Phyllomyza from Virginia (Diptera: Milichiidae)?, Entomological News, vol. March'42, pp. 84-85, 1942.

G. C.  Steyskal, ?A new species of Pholeomyia, with a key to the North American species (Diptera, Milichiidae)?, Entomological News, vol. Apr.,'43, pp. 99-102, 1943.

G. C.  Steyskal, ?The dipterous fauna of tree trunks?, Papers of the Michigan Academy of Science, Arts and Letters, vol. 35, pp. 121-134, 1949.

G. C.  Steyskal, ?Futher notes on Diptera of tree trunks with descriptions of two new species of Drapetis (Diptera; Empididae) and an abstract of a Finnish paper on Diptera by Tuomikoski?, Papers of the Michigan Academy of Science, Arts and Letters, vol. 38, pp. 255-260, 1953.

G. C.  Steyskal, ?Notes on color and pattern of eye in Diptera?, Bulletin of the Brooklyn Entomological Society, vol. 52, pp. 89-94, 1957.

G. C.  Steyskal, ?The postabdomen of male acalyptrate Diptera?, Annals of the entomological Society of America, vol. 50, pp. 66-73, 1957.

G. C.  Steyskal, ?Notes and descriptions of Egyptian acalyptrate Diptera (Ephydridae, Milichiidae, Otitidae)?, Bulletin. Société entomologique d'Égypte, vol. 109, pp. 109-125, 1966.

G. C.  Steyskal, ?A correction to Sturtevant's paper on the seminal receptacles, etc., of the Diptera, 1926?, Proceedings of the Entomological Society of Washington, vol. 74, p. 130, 1972.

G. C.  Steyskal, ?Recent advances in the primary classification of the Diptera?, Annals of the entomological Society of America, vol. 67, pp. 513-517, 1974.

G. C.  Steyskal, ?Biological, anatomical, and distributional notes on the genus Callopistromyia Hendel (Diptera: Otitidae)?, Proceedings of the Entomological Society of Washington, vol. 81, pp. 450-455, 1979.

G. C.  Steyskal and El-Bialy, S., ?A list of Egyptian Diptera with a bibliography and key to families?, United Arab Republic, Ministry of Agriculture, Technical Bulletin, vol. 3, p. 87pp, 1967.