Hodgson, C. and Trencheva, K. (2008) “A new species of Eriococcus (Hemiptera: Sternorrhyncha: Coccoidea: Eriococcidae) and redescriptions of Eriococcus roboris Goux and E. thymelaeae Newstead, with a key to the Eriococcus species on Quercus in the western Palaearctic”, Zootaxa. Auckland, New Zealand, 1959(1), pp. 1–38. doi: 10.11646/zootaxa.1959.1.1.