Incertae sedis (Latin for "of uncertain placement") is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by incertae familiae (of uncertain family), incerti subordinis (of uncertain suborder), incerti ordinis (of uncertain order) and similar terms.
Several genera of the Arctiini tribe of tiger moths are placed as Incertae sedis due to the uncertainty of their phylogenetic relationships within the tribe.
The following genera are not classified in a subtribe.
Several genera of the Lithosiini tribe of lichen moths are placed as Incertae sedis due to the uncertainty of their phylogenetic relationships within the tribe.
The following genera are not classified in a subtribe.