''Rectiostoma xanthobasis'' (yellow-vested moth) is a species of moth in the family

Depressariidae Depressariidae is a family of moths. It was formerly treated as a subfamily of Gelechiidae, but is now recognised as a separate family, comprising about 2,300 species worldwide. Subfamilies Depressariidae consists of ten subfamilies: * Acriinae ...

. It was described by

Philipp Christoph Zeller Philipp Christoph Zeller (8 April 1808 – 27 March 1883) was a German entomologist. Zeller was born at Steinheim an der Murr, Württemberg, two miles from Marbach, the birthplace of Schiller. The family moved to Frankfurt (Oder) where Ph ...

in 1876. It is found along the Atlantic Coastal Plain from south-eastern

Massachusetts Massachusetts ( ; ), officially the Commonwealth of Massachusetts, is a U.S. state, state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and the Gulf of Maine to its east, Connecticut and Rhode ...

south to central

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

and eastern

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

, and north in the Mississippi Valley to

Missouri Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...

and

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...

. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

is 12–14 mm. The forewings are dark brown, with lemon yellow triangular area, continuous with a yellow tegula, occupying the basal third except for the short costal lenticular spot and a longer, narrower spot along the posterior wing margin, both spots concolorous with the ground color. The apical two thirds of the forewing have an inconspicuous area of white scales near the midlength of the costa and a similar, smaller area slightly more distad. There is a broad transverse band, parallel to distal margin of the yellow area and a small group of scales behind the basal white area. There is a short curved band extending from the distal white area and a submarginal longer straight, iridescent blue violet band parallel to the outer wing margin. The hindwings are dark brown with a white patch on the basal half of the anterior margin.Neotropical Microlepidoptera XX: Revision of the Genus Setiostoma (Lepidoptera: Stenomidae)
/ref> The larvae feed on ''

Quercus An oak is a hardwood tree or shrub in the genus ''Quercus'' of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisp ...

'' species, including ''

Quercus nigra ''Quercus nigra'', the water oak, is an oak in the red oak group (''Quercus'' sect. ''Lobatae''), native to the eastern and south-central United States, found in all the coastal states from New Jersey to Texas, and inland as far as Oklahoma, Ke ...

'' and ''

Quercus stellata ''Quercus stellata'', the post oak or iron oak, is a North American species of oak in the white oak section. It is a slow-growing oak that lives in dry areas on the edges of fields, tops of ridges, and also grows in poor soils, and is resistan ...

''. They feed from within a shelter constructed of two leaves sandwiched together with silk.

References

Moths described in 1876 Rectiostoma {{Depressariidae-stub