Mecyna trinalis is a species of moth in the family Crambidae.

It is found in France, Spain, Italy, Austria, the Czech Republic, Slovakia, Poland, Hungary, the Balkan Peninsula, Ukraine,[1] Russia,[2] Turkey and North Africa, including Algeria and Morocco.

[2] The wingspan is about 23[3]-27 mm.

[4] The larvae feed on Helianthemum species.

This Nomophilini-related article is a stub.