''Ypsolopha undulatella'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

of the family

Ypsolophidae Ypsolophidae is a family of moths with some 160 species. They are included in the Plutellidae by many authors. Systematics This is a list of genera and selected species. Ypsolophinae * '' Phrealcia'' Chrétien, 1900 * '' Ypsolopha'' Latreille, ...

. It is known from the United States, including

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...

and

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

. The

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

is about 20–24 mm. The antennae are light fuscous with indistinct darker annulations. The labial palpi are white, dusted with black. The face, head and thorax are bluish white minutely dusted with black atoms, each scale being white with dark lines. The forewings are bluish silvery white, densely overlaid with black and brown in ill-defined wavy transverse lines. Each white scale is tipped with black. The apical part of the wing is strongly cupreous brown, especially around the edge. The hindwings are light fuscous, the abdomen is silvery fuscous and the legs are white dusted with black.Description of American Moths of the Genus Cerostoma
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References

Ypsolopha Moths of North America Moths described in 1906 {{Ypsolophidae-stub