Coelopa is a genus of kelp flies in the family Coelopidae. There are about 14 described species in Coelopa.[1][2][3]
Coelopa frigida is one of the most widely distribute species of seaweed fly. This species is found on the shorelines of the temperate Northern Hemisphere. Often confused for the morphologically similar Coelopa nebularum and Coelopa pilipes. C. frigida feeds primarily on seaweed and stay around these habitats.[6]
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