The Double-lined Prominent Moth (Lochmaeus bilineata) is a moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Notodontidae

Notodontidae

Notodontidae is a family of moths with approximately 3,500 known species. Moths of this family are found in all parts of the world, but they are most concentrated in tropical areas, especially in the New World...

 family. It is found in the eastern two-thirds of the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 and southern Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, west to New Mexico

New Mexico

New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

 in the south and Saskatchewan

Saskatchewan

Saskatchewan is a prairie province in Canada, which has an area of . Saskatchewan is bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, and on the south by the U.S. states of Montana and North Dakota....

 in the north.

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 32-40 mm. Adults have grey to brownish-grey forewings. They are on wing from April to October in the south and from June to August in the north.

The larvae feed on Fagus

Fagus

Fagus may refer to:* Fagus , a god of beech trees in Celtic mythology, especially in Gaul and the Pyrenees.* Fagus, the genus of beeches* Fagus, Missouri, named for the beech* the Fagus Factory, a German architectural landmark of 1913...

, Quercus, Tilia

Tilia

Tilia is a genus of about 30 species of trees native throughout most of the temperate Northern Hemisphere. The greatest species diversity is found in Asia, and the genus also occurs in Europe and eastern North America, but not western North America...

, Betula and Ulmus species.