Lythria

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Panorpida
Cladus: Amphiesmenoptera
Ordo: Lepidoptera
Subordo: Glossata
Cladus: Coelolepida
Cladus: Myoglossata
Cladus: Neolepidoptera
Infraordo: Heteroneura
Cladus: Eulepidoptera
Cladus: Ditrysia
Cladus: Apoditrysia
Cladus: Obtectomera
Cladus: Macroheterocera
Superfamilia: Geometroidea

Familia: Geometridae
Subfamilia: Larentiinae
Tribus: Lythriini
Genus: Lythria
Species: L. cruentaria – L. plumularia – L. purpuraria – L. sanguinaria – L. venustata
References

Õunap, E. ; V. Mironov & J. Viidalepp, 2009: Molecular phylogeny of the genus Lythria and description of the male genitalia of L. venustata (Lepidoptera: Geometridae: Sterrhinae). European Journal of Entomology 106 (4): 643–650. Full article: [1].

Lythria is a genus of moths in the family Geometridae erected by Jacob Hübner in 1823. It is the only genus of the monotypic tribe Lythriini described by Claude Herbulot in 1962.[1]

Systematics

The genus Lythria consists of five species:

Tribe Lythriini Herbulot, 1962
Genus Lythria Hübner, 1823[1]
Lythria cruentaria (Hufnagel, 1767)[1]
Lythria plumularia (Freyer, 1831)
Lythria purpuraria (Linnaeus, 1758)[1]
Lythria sanguinaria (Duponchel, 1842)
Lythria venustata Staudinger, 1882[1][2]

Phylogenics

Within the Sterrhinae, the Lythriini are probably the sister group of the Rhodometrini, as diagrammed by the cladogram below:[3][4]

Sterrhinae	Cosymbiini          Rhodometrini      Lythriini        Timandrini              Rhodostrophiini        unsure        Cyllopodini        unsure        Sterrhini      Scopulini

 
References

Viidalepp, Jaan. Checklist of the Geometridae (Lepidoptera) of the former U.S.S.R. Stenstrup, Denmark: Apollo Books, 1998. 12.
Vasilenko, Sergei V. "Lythria venustata (Lepidoptera, Geometridae), a Rare Species from Kazakhstan." Entomological Review 89.3 (2009): 374-376. ISSN 0013-8738 doi:10.1134/S0013873809030166
Sihvonen, Pasi & Lauri Kaila. "Phylogeny and tribal classification of Sterrhinae with emphasis on delimiting Scopulini (Lepidoptera: Geometridae)." Systematic Entomology 29 (2004): 324–358. doi:10.1016/j.ympev.2006.12.027
Õunap, Erki, Jaan Viidalepp, & Urmas Saarma. "Systematic position of Lythriini revised: transferred from Larentiinae to Sterrhinae (Lepidoptera, Geometridae)." Zoologica Scripta 37.4 (2008): 405-413. doi:10.1111/j.1463-6409.2008.00327.x