A record of the North American wedge clam Rangia cuneata in the vicinity of Mewia Łacha nature reserve.
The North American wedge clam Rangia cuneata (G.B. Sowerby I, 1831) is a species spreading worldwide. The native range of this bivalve is restricted to the Mexican Gulf. In Poland it was noted in the Vistula Lagoon and the Gulf of Gdańsk. This contribution presents a new site of R. cuneata in the Baltic Sea. Empty shells were found in the vicinity of Mewia Łacha nature reserve in Mikoszewo, Poland (54.349227°E; 18.972424°E) in September 2018. The clam most probably also occurs within the reserve. Most probably, the species will become a resident species in the Baltic Sea.