Taxonomic revision of the Tetraneura akinire species group (Insecta, Aphididae, Eriosomatinae), with description of a new species and a correction of a nomenclatural confusion Author Watanabe, Tomoko Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan. Author Lee, Wonhoon Department of Plant Medicine and Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea. Author Sano, Masakazu Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan; Present address: Division of Large-Scale Upland Farming Research, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Sapporo 062 - 8555, Japan. Author Murakami, Keisuke Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan. Author Akimoto, Shin-Ichi Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo 060 - 8589, Japan; Present address: The Hokkaido University Museum, Sapporo 060 - 0810, Japan. text Zootaxa 2022 2022-09-12 5183 1 162 186 journal article 140874 10.11646/zootaxa.5183.1.14 4ae9eeda-a1bc-4c01-8eb9-da0a5c67188c 1175-5326 7070086 0C146F2F-00D5-4C43-B500-341AFD8F384B Key to Tetraneura ovaliformis sp. nov. , T. akinire , and T. sorini I. Fundatrix first instar nymph 1. Antenna 0.12−0.14 mm long and more than 0.75 times as long as hind femorotrochanter …......... T. ovaliformis sp. nov. - Antennae longer than 0.15 mm long and less than 0.75 times as long as hind femorotrochanter........................ 2 2. Hind femorotrochanter 0.18−0.27 mm long........................................................... T. akinire - Hind femorotrochanter mostly longer than 0.27 mm long................................................. T. sorini II. Emigrant adult 1. First tarsal chaetotaxy 3:3:3............................................................ T. ovaliformis sp. nov. - First tarsal chaetotaxy 3:3:2 or 3:2−3:2................................... .. T. akinire or T. sorini (indistinguishable) III. Sexupara adult 1. First tarsal chaetotaxy 3:3:3............................................................ T. ovaliformis sp. nov. - First tarsal chaetotaxy 3:3:2 or 3:2−3:2.................................................................... 2 2. Cornicle 0.04−0.05 (0.04) mm in diameter. Wax gland plates on marginal abdomen with minute round facets of similar size. T. akinire - Cornicle 0.06−0.08 (0.07) mm in diameter. Wax gland plates on marginal abdomen with two types of facets, larger ones of which are present in the center of plate, and small ones present peripherally................................. T. sorini