Hirtodrosophila duncani is a North American fruit fly, a member of the fungus-breeding genus Hirtodrosophila.Bächli, G. (1999-2010). TaxoDros: The Database on Taxonomy of Drosophilidae. Available at Its taxonomic position has been unclear for a long time due to its unique male genitalia, but recent molecular studies indicate that it is closely related to the New World Sophophora.O'Grady, P. and R. DeSalle (2008). Out of Hawaii: the origin and biogeography of the genus Scaptomyza (Diptera: Drosophilidae). Biology Letters 4:195-199. van der Linde, K., Houle, D., Spicer, G. S. & Steppan, S. J. (2010). A supermatrix-based molecular phylogeny of the family Drosophilidae. Genetics Research 92, 25-38.
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