Elachista madarella

{{Short description|Species of moth}}

{{Speciesbox

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| genus = Elachista

| species = madarella

| authority = (Clemens, 1860)

| synonyms =

• Cosmiotis madarella Clemens, 1860

}}

Elachista madarella is a moth of the family Elachistidae. It is found in North America, where it has been recorded from Illinois, Indiana, Maine, Massachusetts, New Hampshire, New Jersey, New York, Ohio, Ontario and Pennsylvania.[http://mothphotographersgroup.msstate.edu/species.php?hodges=1121 mothphotographersgroup]

The wingspan is 8–9 mm. Adults have been recorded on wing from May to October.

The larvae feed on Carex pubescens, Carex cristata and Scirpus atrovirens. They mine the leaves of their host plant.[https://archive.org/stream/memoirsofameric131948amer/memoirsofameric131948amer_djvu.txt Memoirs of the American Entomological Society] Larvae can be found in early spring. Pupation takes place on the upper side of a leaf over the midrib.