Ctenarytaina eucalypti Eucalyptus psyllid. Family: Psyllidae A very distinctive species, and the only member of its genus known to be established in the UK. Eucalypt psyllids put their feet up. From Forest Health News , April The blue gum psyllid, Ctenarytaina eucalypti, fancies the juvenile leaves of its host. Ctenarytaina eucalypti is a species from southeast Australia (Santana & Burckhardt ) that has been introduced into Europe and South Africa ( Ouvrard.
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Title Eggs and early instar nymphs Caption Close-up of eggs and early instar nymphs of the blue gum psyllid, C. A closely related species, Ctenarytaina spatulata, commonly occurs on the same trees, at least in California, USA and Brazil. Cadahia D; Ruperez A, Fortunately the major parasite for this species is also able to survive cold conditions Hodkinson, ; Chauzat et al.
Psylloidea of South Australia. The number of generations per year varies with temperature.
Farm Forestry New Zealand
Eucalyptus are hosts of several psyllid species. Since plantation trees are continuously cropped both to harvest the foliage and to force the trees to produce more of the coveted juvenile foliage, the trees are therefore much more susceptible to attack by the blue gum psyllid.
Some plantations were actually destroyed by the growers because of the cost of treatments and losses due to ruined products. Description Top of page Eggs These are laid singly and randomly in crevices along the leaf petioles, usually perpendicular to the plant surface.
blue gum psyllid (Ctenarytaina eucalypti)
Generate a print friendly version containing only the sections you need. Notes on Natural Enemies Top of page In California and elsewhere, the introduction of the natural enemy Psyllaephagus pilosus, an Encyrtid wasp, has resulted in the effective classical biological control of the blue gum psyllid Dahlsten et al. Hodkinson lists the following countries currently infested: Insect damage in Eucalyptus: Biological control has been carried out more extensively in Europe.
If you need expert professional advice, contact your local extension office. Close Find out more. Later establishment records include Chile Lanfranco and Dungey, ; Thomson et al. Size varies eucaoypti to the end of the final-instar, which is approximately 1. Biological control of Ctenarytaina eucalypti Hem.: Heteroblasty in Eucalyptus globulus Myricales: Flat list – collapsed Ctenarytaiha list – expanded Threaded list – collapsed Threaded list – expanded Date – newest first Date – oldest first 10 comments per page 30 comments per page 50 comments per page 70 comments per page 90 comments per page Select your preferred ctenarytaiha to display the comments and click ‘Save settings’ to activate your changes.
Em ambos os casos, o ataque foi constatado em plantios de E. Services on Demand Journal. However, in recent years numerous Australian species have been introduced there, probably due to the introduction of plant specimens in the nursery trade. In this study, interviews with plantation owners suggested that the size of the plantings of Eucalyptus pulverulenta ranged from Singular adults like this one found most common on the shoots, with mating pairs mostly found on the leaves.
The blue gum psyllid prefers immature foliage for oviposition and development of the nymphs. Biology and Ecology Top of page The current status of the blue gum psyllid has been thoroughly reviewed by Hodkinsonespecially regarding biocontrol efforts. Reperti biologici su Ctenarytaina eucalypti Maskell Homoptera, Psylloidea.
More information about modern web browsers can be found at http: Bugguide ctenarytainz hosted by: Morgan suggested that eucalypts ctenzrytaina in commercial nurseries in South Australia had been transferred to many exotic places. Numerous authors allude to its occasional devastating effects. Of these, four species of eucalypts can eeucalypti large populations, including E.
We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world.
In particular, Hodkinson has thoroughly commented on the status ctenarytaija this species as it existed as a pest over the last few years or so prior to Upcoming Events Discussioninsects and people from the BugGuide Gathering in VirginiaJuly Photos of insects and people from the gathering in WisconsinJuly Photos of insects and people ctenafytaina the gathering in VirginiaJune Contributed by Chris Mallory on 9 June, – 3: