''Greya obscura'' 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 Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Prodoxidae The Prodoxidae are a family of moths, generally small in size and nondescript in appearance. They include species of moderate pest status, such as the Lampronia capitella, currant shoot borer, and others of considerable ecological and evolutiona ...

. It is found from south-western

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

to the San Garbriel Mountains and the southern Sierra Nevada of

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 habitat consists of grassy portions of open oak woodland. 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 10.5–19 mm. The forewings are grey to light brown in males and dark stramineous or with a slight bronzy iridescence in females. The hindwings are either the same shade as the forewings or darker but always without a pattern.TOLweb
/ref> The larvae feed on ''

Lithophragma ''Lithophragma'' is a genus of flowering plants in the saxifrage family containing about nine species native to western North America. These plants are known generally as woodland stars. The petals of the flowers are usually bright white with de ...

'' species. The larvae are thought to be

leaf miners A leaf miner is any one of numerous species of insects in which the larval stage lives in, and eats, the leaf tissue of plants. The vast majority of leaf-mining insects are moths (Lepidoptera), sawflies (Symphyta, the mother clade of wasps), ...

References

Moths described in 1992 Prodoxidae Taxa named by Donald R. Davis (entomologist) {{Incurvarioidea-stub