The Sugarbeet Crown Borer Moth or Sugarbeet Crown Borer (Ancylosis undulatella) is a species of snout moths

Pyralidae

The Pyralidae or snout moths are a family of Lepidoptera in the ditrysian superfamily Pyraloidea. In many classifications, the grass moths are included in the Pyralidae as a subfamily, making the combined group one of the largest families in the Lepidoptera...

 in the genus Ancylosis

Ancylosis

Ancylosis is a genus of snout moths. It was described by Zeller, in 1839, and is known from South Africa, Uzbekistan, Spain, Turkmenistan, Lebanon, Algeria, Tunisia, Russia, Israel, Palestine, Tinos, Australia, Seychelles, Afghanistan, the United States, Iraq, Namibia, Kazakstan, Iran, Mauritius,...

. It was described by Clemens in 1860. It is found in North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

, from Ontario

Ontario

Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

 and Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

 to Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

, west to California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, north to Oregon

Oregon

Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

 and Idaho

Idaho

Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

.

The wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 is 16-18 mm. The forewings are narrow, light brown to greyish-brown with a reddish-brown to black band in the basal area. The hindwings are more than twice as broad as the forewings and greyish-brown with darker shading toward the outer margin. Adults are on wing from spring to fall in two generations per year.

The larvae feed on the leaves, leafstems and crowns of sugarbeets. The species overwinters in the pupal stage in the soil.