Micropterix aruncella is a species of moth belonging to the family Micropterigidae, which is distributed throughout Europe.

In Britain both species can be found, during the day, on creeping buttercup (Ranunculus repens), but the UKmoths website recommends searching the lower flowers of hawthorn Crataegus monogyna for M. aruncella.

The larva feeds on detritus at the base of herbaceous plants before pupating in a tough cocoon.

[1][6] The name Micropterix was raised by the German entomologist, Jacob Hübner in 1825 and comes from the Greek for mikros – little, and pterux – a wing.

[7] The specific name aruncella refers to the plant, goat's beard (Spiraea aruncus), on which moths have been found feeding on the pollen.