''Cremastobombycia grindeliella'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

of the family

Gracillariidae Gracillariidae is an important family of insects in the order Lepidoptera and the principal family of leaf miners that includes several economic, horticultural or recently invasive pest species such as the horse-chestnut leaf miner, ''Cameraria ...

. It is known from

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

, United States.Global Taxonomic Database of Gracillariidae (Lepidoptera)
/ref> The

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

is about 8 mm. The

larva A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase ...

e feed on ''

Anaphalis margaritacea ''Anaphalis margaritacea'', commonly known as the western pearly everlasting or pearly everlasting, is an Asian and North American species of flowering perennial plant in the family Asteraceae. Description ''A. margaritacea'' grows erect up to ...

'', ''

Gnaphalium ''Gnaphalium'' is a genus of flowering plants in the family Asteraceae, commonly called cudweeds or (formerly) chafeweeds. They are widespread and common in temperate regions, although some are found on tropical mountains or in the subtropical re ...

'' species, '' Grindelia camporum'', ''

Grindelia robusta ''Grindelia hirsutula'' is a North American species of flowering plant in the family Asteraceae known by the common names hairy gumplant and hairy gumweed. Distribution ''Grindelia hirsutula'' is native to North America, widespread across Canada ...

'' and '' Pseudognaphalium stramineum''. They mine the leaves of their host plant. The mines occur upon either the upper or lower surface of the leaves. In the upperside mines, the leaf is more contracted and the epidermis is thrown into more distinct folds than is the case in the lower side mines. The elongate white silken cocoon is attached at its posterior end by two fine threads, and at its anterior end by a rather broad band of silk.

References

Lithocolletinae Moths of North America Lepidoptera of the United States Fauna of California Moths described in 1891 Taxa named by Thomas de Grey, 6th Baron Walsingham Leaf miners {{Lithocolletinae-stub