Plant-lice (Homoptera, Aphidina) of the Insubrian region of the Ticino having a Submediterranean, Mediterranean, East-European, Asiatic or American origin.
Sixteen aphid species of Submediterranean, Mediterranean, East-European, Asiatic or American origin are described. Of these, 4 are new for Switzerland: Neochromaphis ostryae [Pterocallis ostryae], Takecallis arundinariae, T. taiwanus and Megoura lespedezae. The latter (of East-Asiatic origin) is also new for Europe. The North-American species Myzocallis walshii and the West-Asiatic species Tinocallis nevskyi were found for the second time in Switzerland, both species were introduced to Europe only recently, as well as the species Cinara cedri and C. tujafilina.