A first record of three aphid pests (Aphididae: Calaphidinae) on walnut in Korea

Abstract

In this study, we reported three walnut (Juglandaceae) aphid pests, Chromaphis juglandicola (Kaltenbach, 1843), Monelliopsis caryae (Monell, 1879), and Panaphis juglandis (Goeze, 1778), based on the taxonomic study of aphids on walnut trees in Korea. Species diagnosis and illustrations are provided for the three species. Distributions and host plant association data are also given. Keywords: Chromaphis, Invasive species, Juglans, Monelliopsis, Panaphis