The distribution in Spain of Zelus renardii, an American invasive species, is analyzed after eight years of its introduction. New hypotheses are presented about its introduction in Europe and its forms of expansion. In Spain, the species seems to have limited its expansion to anthropogenic and urban areas of thermo-Mediterranean-type climate regions and his area of distribution is currently limited to the coastal regions of the Iberian east and south, from the city of Valencia in the north to Málaga in the south. The world distribution of the species is shown and discussed.