''Crassa'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of the

concealer moth Oecophoridae (concealer moths) is a family of small moths in the superfamily Gelechioidea. The phylogeny and systematics of gelechoid moths are still not fully resolved, and the circumscription of the Oecophoridae is strongly affected by this. ...

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

(Oecophoridae). Among these, it belongs to

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

Oecophorinae __NOTOC__ The Oecophorinae are the nominate subfamily of moths in the concealer moth family (biology), family (Oecophoridae). They are part of the insufficiently studied Taxonomic rank, superfamily Gelechioidea, and like their relatives, the Circu ...

. The

genus name Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial spec ...

''Tichonia'', established by J. Hübner in 1825, was frequently misapplied to these moths by earlier authors. But as the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

of Hübner's genus is the greenweed flat-body moth – originally described as ''Tinea atomella'', but nowadays called ''

Agonopterix atomella ''Agonopterix atomella'' is a moth of the family Depressariidae. It is found in most of Europe. The wingspan is 16–22 mm. Adults are on wing from October to May. The larvae feed on ''Genista tinctoria'', ''Genista anglica'', ''Genista ...

'' –, ''Tichonia'' is actually a

junior synonym In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. ...

of ''

Agonopterix ''Agonopterix'' is a moth genus of the superfamily Gelechioidea. It is placed in the family Depressariidae, which was often – particularly in older treatments – considered a subfamily of the Oecophoridae or included in the Elachisti ...

''. That genus does belong to the same

superfamily SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...

(the

Gelechioidea __NOTOC__ Gelechioidea (from the type genus ''Gelechia'', "keeping to the ground") is the Taxonomic rank, superfamily of moths that contains the case-bearers, twirler moths, and relatives, also simply called curved-horn moths or gelechioid moths. ...

) as ''Crassa'', but is placed in the concealer moth subfamily

Depressariinae The Depressariinae – sometimes spelled "Depressiinae" in error – are a subfamily of moths in the superfamily Gelechioidea. Like their relatives therein, their exact relationships are not yet very well resolved. It has been considered ...

which is sometimes treated as distinct family.

Species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of ''Crassa'' include:See references in Savela (2001) * '' Crassa tinctella'' (Hübner, 1796) * ''

Crassa unitella ''Crassa'' is a genus of the concealer moth family (Oecophoridae). Among these, it belongs to subfamily Oecophorinae. The genus name ''Tichonia'', established by J. Hübner in 1825, was frequently misapplied to these moths by earlier authors. B ...

'' (Hübner, 1796)

Footnotes

References

* (2004a)
Butterflies and Moths of the World, Generic Names and their Type-species
&ndash
''Crassa''
Version of 2004-NOV-05. Retrieved 2010-APR-27. * (2004b)
Butterflies and Moths of the World, Generic Names and their Type-species
&ndash
''Tichonia''
Version of 2004-NOV-05. Retrieved 2010-APR-27. * (2001): Markku Savela's Lepidoptera and some other life forms &ndash

Version of 2001-NOV-07. Retrieved 2010-APR-27. Oecophoridae {{Oecophoridae-stub