Throckmorton (1975) considered the funebris species group to be basal within the Drosophila radiation because of their distribution and ecological habits. It currently contains seven species. It is uncertain where this group is placed within the Drosophilidae, although some studies consider this group a part of the immigrans–tripunctata radiation (Remsen and O’Grady, 2002). Additional work will be necessary to determine the phylogenetic affinities of this unique clade.
(excerpted from Markow and O’Grady, 2006, Chapter 1)
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