Hardy D. E., 1951: A monographic study of the African Bibionidae (Diptera) Part II: Genus Philia Meigen. 21 pp. 

 Hardy D. E., 1951: Proposal that the name "Dorilas" Meigen, 1800, should be retained and the name "Pipunculus" Latreille, (1802-1803) (Class Insecta, order Diptera) should be treated as a synonym. 2 pp. 

 Hardy D. E., 1951: Proposed addition to the "Official list of generic names in zoology" of the generic name "Philia" Meigen, 1800 (Class Insecta, order Diptera). 2 pp. 

 Hardy D. E., 1951: Studies in Pacific Bibionidae (Diptera) Part II: Genus Philia Meigen. 19 pp. 

 Hardy D. E., 1952: A monographic study of the African Bibionidae (Diptera) Part III, genus Plecia. 20 pp. 

 Hardy D. E., 1952: Additions and corrections to Bryan’s check list of the Hawaiian Diptera. 42 pp. 

 Hardy D. E., 1952: Flies collected in bait traps. 3 pp. 

 Hardy D. E., 1953: New Hawaiian Tipulidae (Diptera). 4 pp. 

 Hardy D. E., 1953: Studies in Hawaiian Dorilaidae (Diptera) Part I. 15 pp. 

 Hardy D. E., 1953: The Bibionidae of New Zealand (Diptera). 9 pp. 

 Hardy D. E., 1954: Neotropical Dorilaidae studies, part III. Brazilian species and a key to the known species of Dorilas sens. lat. 60 pp. 

 Hardy D. E., 1954: Notes and descriptions on Australian fruit flies (Diptera: Tephritidae). 6 pp. 

 Hardy D. E., 1954: Records of Bibionidae in the Musée Royal du Congo Belge, Tervuren. 3 pp. 

 Hardy D. E., 1954: Studies in new World Dorilaidae (Pipunculidae: Diptera). 7 pp. 

 Hardy D. E., 1955: Sphaeniscus Becker and Euphranta Loew of the Oriental and Pacific Regions (Tephritidae-Dipteraaa). 8 pp. 

 Hardy D. E., 1956: Austromyia neglecta Hardy, a new synonym of Neotoxura discoidalis (Bezzi) (Diptera: Pyrgotidae), with a discussion of some family relationships. 2 pp. 

 Hardy D. E., 1956: Dorilaidae (Pipunculidae) from the Commonwealth institute of entomology. 3 pp. 

 Hardy D. E., 1956: Insects of Micronesia. Diptera: Bibionidae and Scatopsidae. 16 pp. 

 Hardy D. E., 1956: Insects of Micronesia. Diptera: Coelopidae (Phycodromidae). 7 pp. 

 Hardy D. E., 1956: Insects of Micronesia. Diptera: Dorilaidae (Pipunculidae). 10 pp. 

 Hardy D. E., 1956: New Hawaiian Sciaridae (Diptera). 19 pp. 

 Hardy D. E., 1956: Proposed use of the plenary powers to validate the generic name "Campsicnemus" Haliday, 1851 (class Insecta, order Diptera). 3 pp. 

 Hardy D. E., 1956: The Walker types of Bibionidae (Diptera). 7 pp. 

 Hardy D. E., 1957: A review of the genera Sophira Walker and Tritaeniopteron De Meijere (Diptera: Tephritidae). 13 pp. 

 Hardy D. E., 1958: A review of the genus Pseudiastata Coquillett (Drosophilidae, Diptera). 7 pp. 

 Hardy D. E., 1958: The Plecia of the Pacific and Southeast Asia (Bibionidae-Diptera). 36 pp. 

 Hardy D. E., 1959: A new Bibionidae from California (Diptera). 3 pp. 

 Hardy D. E., 1960: A new Bibio from the Sierra Mountains, California, and a new Plecia from Malaya (Diptera: Bibionidae). 5 pp. 

 Hardy D. E., 1960: Chapter XI. Diptera (Nematocaera): Bibionidae. 6 pp. 

 Hardy D. E., 1960: The Diptera of Hawaii. 2 pp. 

 Hardy D. E., 1961: Notes and descriptions of exotic Bibionidae (Diptera). 19 pp. 

 Hardy D. E., 1962: Preliminary studies on the Pipunculidae of Madagascar (Diptera). 29 pp. 

 Hardy D. E., 1962: Studies in Pipunculidae (Diptera) of Colombia. 8 pp. 

 Hardy D. E., 1962: The Bibionidae (Diptera) of Madagascar. Part III. 22 pp. 

 Hardy D. E., 1964: A re-study of the Perkins types of Australian Pipunculidae (Diptera) and the type of Pipunculus vitiensis Muir from Fiji. 42 pp. 

 Hardy D. E., 1966: A catalogue of the Diptera of the Americas South of the United States. 32. Family Scenopinidae (Omphralidae). 5 pp. 

 Hardy D. E., 1966: A catalogue of the Diptera of the Americas South of the United States. 45. Family Pipunculidae (Dorilaidae). 15 pp. 

 Hardy D. E., 1966: Descriptions and notes on Hawaiian Drosophilidae (Diptera). 50 pp. 

 Hardy D. E., 1966: The Walker types of fruit flies (Diptera: Tephritidae) in the British Museum. Part III. 11 pp. 

 Hardy D. E., 1967: 109. Bibionidae. Ergebnisse der zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei (Diptera). 10 pp. Reichenbachia 9/22: 191-200.

 Hardy D. E., 1967: Studies of fruitflies associated with mistletoe in Australia and Pakistan with notes and descriptions on genera related to Perilampsis Bezzi. With 8 textfig. (Diptera, Tephritidae). 23 pp. [60458] Beiträge zur Entomologie 17(1-2): 127-149.

 Hardy D. E., 1967: The Bibionidae (Diptera) of Nepal, results of the Austrian and the B. P. Bishop Museum Expeditions, 1961 and 1965. 18 pp. 

 Hardy D. E., 1968: The fruit fly types in the Naturhistorisches Museum, Wien (Tephritidae-Diptera). 49 pp. 

 Hardy D. E., 1969: Notes on Hawaiian "idiomyia" (Drosophila). 7 pp. 

 Hardy D. E., 1974: A new tephritis from flower heads of Thistle in Pakistan (Diptera: Tephritidae). 3 pp. 

 Hardy D. E., 1976: Resurrection of Bactrocera Macquart and clarification of the type-species, longicornis Macquart (Diptera: Tephritidae). 5 pp. 

 Hardy D. E., 1977: Review of the Hawaiian Drosophila (antopocerus) Hardy. 14 pp. 

 Hardy D. E., 1978: A new symmorphic sibling species of Drosophila (Diptera) from the Island of Maui, Hawaii. 2 pp. 

 Hardy D. E., 1978: Replacement name for Drosophila nigricolor Hardy (Diptera: Drosophilidae). 1 pp. 

 Hardy D. E., Kaneshiro K. Y., 1968: New picture-winged Drosophila from Hawaii. 92 pp.