The morphology of Andalucia broadly resembles that of other jakobids. Molecular data has not always been conclusive, but recent phylogenomic analyses indicate that Andalucia is a sister group to the other jakobids, in other words more closely related to them than to the Heterolobosea or Euglenozoa (the other two groups in the Discoba). The α-tubulin gene of Andalucia more closely resembles that of opisthokonts and diplomonads than its closer relatives, the apparent result of horizontal gene transfer.
- A. incarcerata was until 2006 known as Jakoba incarcerata. It lives in sulfide-rich sediments, especially marine intertidal ones.
- A. godoyi is a soil heterotroph.
Analysis of DNA sequences from the environment suggest at least two additional species which have not been isolated or formally described.
- Lara, Enrique; Chatzinotas, Antonis; Simpson, Alastair G. B. (2006), "Andalucia (n. Gen.)-the Deepest Branch Within Jakobids (Jakobida; Excavata), Based on Morphological and Molecular Study of a New Flagellate from Soil", The Journal of Eukaryotic Microbiology, 53 (2): 112–20, doi:10.1111/j.1550-7408.2005.00081.x, PMID 16579813
- Hampl V, Hug L, Leigh JW, et al. (March 2009), "Phylogenomic analyses support the monophyly of Excavata and resolve relationships among eukaryotic "supergroups"", Proc. Natl. Acad. Sci. U.S.A., 106 (10): 3859–64, Bibcode:2009PNAS..106.3859H, doi:10.1073/pnas.0807880106, PMC , PMID 19237557
- Simpson, Alastair G.B.; Perley, Thomas A.; Lara, Enrique (2008), "Lateral transfer of the gene for a widely used marker, α-tubulin, indicated by a multi-protein study of the phylogenetic position of Andalucia (Excavata)" (PDF), Molecular Phylogenetics and Evolution, 47 (1): 366–77, doi:10.1016/j.ympev.2007.11.035, PMID 18226931
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