Micropterix trifasciella is a species of moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 belonging to the family Micropterigidae

Micropterigidae

Micropterigoidea is the superfamily of "mandibulate archaic moths", all placed in the single family Micropterigidae, containing currently about 20 living genera. They are considered the most primitive extant lineage of Lepidoptera ....

. It was described by heath in 1965. It is known from the French

French Alps

The French Alps are those portions of the Alps mountain range which stand within France, located in the Rhône-Alpes and Provence-Alpes-Côte d'Azur regions....

 and Italian Alps, and is known to inhabit herb

Herb

Except in botanical usage, an herb is "any plant with leaves, seeds, or flowers used for flavoring, food, medicine, or perfume" or "a part of such a plant as used in cooking"...

acious plants at an elevation range of 1400-1900 metres. Male Micropterix trifasciella have a wingspan of 3.4-4.7 millimetres, while females have a wingspan of 4.2-4.8 millimetres.