Biology and control of psyllids, and the possible causes for defoliation ofEucalyptus camaldulensisDehnh. (river red gum) in south-eastern Australia—a review

Ocorrência de <i>Glycaspis brimblecombei</i> (Moore, 1964) (hemiptera: psyllidae) em <i>Eucalyptus</i> spp. no Rio Grande do Sul, Brasil.

“…Esses insetos podem se tornar uma das pragas mais devastadoras, atacando severamente plantações de Eucalyptus sp. (Collett, 2001). Entre as espécies de psilídeo consideradas praga encontra-se Glycaspis brimblecombei (psilídeo-de-concha).…”

Integrated Pest Management of Eucalypt Psyllids (Insecta, Hemiptera, Psylloidea)

“…They secrete large amounts of honeydew which is secreted as small wax-covered globules together with a large amount of flocculent waxy secretions along the sides of the abdomen, which spread out all over the colony . Honeydew and waxy secretions harm the development of the young plants, particularly in the first two years of planting (Collet, 2001a). In the first larval instar, the body is entirely yellow, except for the small red eyes.…”

“…Often, necrosis on foliage of mature leaves occurs beneath the lerp (Fig. 3D, E), as can be found on many eucalypt species, especially of E. camaldulensis and E. blakelyi (Collet, 2001a). …”

“…In Australia most populations of eucalypt psyllids are in balance (Collet, 2001a). However, when introduced into other continents, their populations may increase and become a serious problem (Paine & Millar, 2002).…”

“…It uses as hosts Eucalyptus botryoides, E. saligna, E. robusta, E. grandis (Collet, 2001a), E. camaldulensis, E. blakelyi (Collet, 2001b), E. globulus and E. tereticornis. According to Withers (2001), 57 insect species originating from Australia have been introduced in New Zealand, among them, C. fiscella.…”