Micropterix trinacriella is a species of moth belonging to the family Micropterigidae that was described by Michael A. Kurz, Hans Christof Zeller-Lukashort and Marion E. Kurz in 1997.

It is only known from the area near the northern shore of Sicily, as well as in the surrounding of Mount Etna.

[1] The length of the forewings is 2.6–3.1 millimetres (0.10–0.12 in) for males and 2.8–3.6 millimetres (0.11–0.14 in) for females.

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