Porphyrosela minuta is a moth of the family Gracillariidae. It is known from Argentina, Brazil and Chile.Global Taxonomic Database of Gracillariidae (Lepidoptera) It has been recently introduced in North America and is found in several states, as far north as Maryland.https://bugtracks.wordpress.com/2017/03/26/hiding-in-plain-sight/ Hiding in Plain Sigh
The larvae feed on Medicago sativa and Trifolium species (including Trifolium pratense). They mine the leaves of their host plant.
References
Links Bugguide. Info and images