Lobstermen Seeing Red Over Langostinos When is a lobster not a lobster? When it is a Langostino Lobster. At least that's the opinion of Maine lobstermen. Restaurants are marketing the langostino as lobster, and the cheap price is driving down demand for the Maine catch. It's no wonder the experts in Maine are feeling crabby. They say the langostino is really an overgrown cousin of the hermit crab.