GIBBOMYUS FAVRETI SP. N. (HEM. APHIDIDAE MACROSIPHINI), A SECOND SPECIES IN THE GENUS

Abstract

Gibbomyzus is recorded for the first time in South America; it was known in Costa Rica and Mexico. Gibbomyzus favreti sp. n. is described from apterous and alate viviparous females collected in Salta and Jujuy provinces (Argentine Northwest) on Jungia polita Griseb. (Asteraceae) and on an unidentified species of climbing dicot. It is the second species of Gibbomyzus Nieto Nafría, Pérez Hidalgo, Martínez-Torres and Villalobos Muller, 2013 (Aphididae, Aphidinae, Macrosiphini). The differences between Gibbomyzus and Delfinoia Nieto Nafría & Mier Durante, 2017 are provided, the latter genus being established after Gibbomyzus. The features that allow differentiating G. favreti sp. n. from the type species of the genus, G. pteridophytorum, are also provided. The possibility that other species of Gibbomyzus are still to be discovered is commented on. Key Words: Gibbomyzus, Aphididae, new species, South America, Argentina, Jungia polita.