''Ypsolopha delicatella'' 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 ...

and

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

. 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 17 mm. The labial palpi are white, the second joint sprinkled with a few black scales on the outside and the terminal joint with a small black spot at the base. The tuft on the second joint is compressed, pointed and longer than the terminal joint. The head and thorax are white. The dorsal half of the forewings from base to tornus is dark reddish-brown, with strong purple reflections, but lighter and more yellowish on the dorsal edge, gradually becoming darker and more purple towards the middle of the wing. Bordering this dorsal part, the edge of which is sharply defined as a straight central line, is a longitudinal pure white streak. Above this the costal part of the wing is bright golden yellow. The costal yellow part is produced somewhat farther out in the apical part of the wing than is the darker dorsal color, which stops abruptly at the tornus. The apical part of the wing is white, delicately mottled with black, each scale having a thin curved black edge. The hindwings are light silvery ochreous, but slightly darker, fuscous towards apex. The legs are white, the anterior two pairs mottled with black.Notes on the Cerostoma Group of Yponomeutidae, with Descriptions of New North American Species

References

Ypsolopha Moths of North America Moths described in 1903 {{Ypsolophidae-stub