<i>Essigella californica</i> (Essig) and <i>Eulachnus thunbergii</i> Wilson (Hemiptera: Aphididae: Lachninae) on <i>Pinus</i> in south‐eastern Australia

Abstract

Abstract Accounts are given of two related, exotic lachnine aphid species colonising Pinus species in eastern Australia. Essigella californica (Essig), a recent adventive, is now abundant and widespread on Pinus radiata in south‐eastern Australia; its economic importance is discussed. Eulachnus thunbergii Wilson is commonly to be found on other, less extensively planted, species of Pinus in north‐eastern New South Wales. Means of distinguishing between the two species are provided.