''Stigmella intermedia'' 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 ...

of the family Nepticulidae. It is found in North America in

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Arkansas Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the ...

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and

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

. 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 ...

is 3-3.5 mm. Usually there are two generations per year, with larvae maturing in July and overwintering, but occasionally a third generation appears. The larvae feed on '' Rhus typhina'' and '' Rhus aromatica''. They mine the leaves of their host plant. The loosened epidermis is bright green at first, later yellowish, and is marked by a broad blackish

frass Frass refers loosely to the more or less solid excreta of insects, and to certain other related matter. Definition and etymology ''Frass'' is an informal term and accordingly it is variously used and variously defined. It is derived from the G ...

line nearly as broad as the mine. The larvae are very bright green.

External links

Nepticulidae of North AmericaA taxonomic revision of the North American species of Stigmella (Lepidoptera: Nepticulidae)
Nepticulidae Moths of North America Moths described in 1917 {{Stigmella-stub