Loukozoa is a paraphyletic taxon used in some classifications of excavate

Excavate

The excavates are a major kingdom of unicellular eukaryotes, often known as Excavata. The phylogenetic category Excavata, proposed by Cavalier-Smith in 2002, contains a variety of free-living and symbiotic forms, and also includes some important parasites of humans.-Characteristics:Many excavates...

 protist

Protist

Protists are a diverse group of eukaryotic microorganisms. Historically, protists were treated as the kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms, but this group is contested in modern taxonomy...

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The largest group within Loukozoa is the "jakobids". Loukozoa, however, also includes Malawimonas. Although Jakobids and Malawimonas look rather similar, they are not specifically related to one another within Excavata, and Loukozoa is a paraphyletic group.

Molecular phylogenetic evidence suggests strongly that jakobids are most closely related to Heterolobosea (=Percolozoa) and Euglenozoa

Euglenozoa

The Euglenozoa are a large group of flagellate protozoa. They include a variety of common free-living species, as well as a few important parasites, some of which infect humans. There are two main subgroups, the euglenids and kinetoplastids...

. The taxon name Discoba was proposed for this apparently monophyletic group.