Abstract

Here we present a description of a new aphid species—Uroleucon (Uroleucon) lebanonense sp. nov. associated with Tragopogon coloratus (Asteraceae) in Lebanon. Apterous and alate viviparous females of the new species are described and illustrated, and compared with the morphologically similar species Uroleucon (U.) mongolicum Holman, 1975. An identification key to Palaearctic Uroleucon species with three setae on the first tarsal segment is provided. On the basis of the re-examination of the type material, we propose to restore the valid species status of U. (U.) altaicum Szelegiewicz, 1982 bona species which was regarded as a synonym of U. mulgedii (Nevsky, 1928). Additionally, we propose transfer of U. (U.) altaicum, U. (U.) bielawskii (Szelegiewicz, 1962) and U. (U.) mulgedii to the subgenus Lambersius Olive.