Stigmella longisacca

{{Short description|Species of moth}}

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| taxon =Stigmella longisacca

| authority = Newton & Wilkinson, 1982

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Stigmella longisacca is a moth of the family Nepticulidae. It is found in California, United States.

The wingspan is 3.2-4.4 mm. There are two and possibly three generations per year.

The larvae feed on Juglans species, including Juglans californica. They mine the leaves of their host plant.