Testacea may refer to: a former order of rhizopods, which consisted of testate amoeboid organisms. a former group of shelled molluscs and other invertebrates, created by Linnaeus and roughly corresponding to the colloquial term seashell (see Vermes). a species group of Drosophila in the Drosophila subgenus.Grimaldi, D., James, A.C., Jaenike, J. 1992. "Systematics and Modes of Reproductive Isolation in the Holarctic Drosophila testacea Species Group (Diptera: Drosophilidae)." Ann. Ent. Soc. Am., 85(6):http://aesa.oxfordjournals.org/content/85/6/671
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