Paropsis atomaria (Eucalyptus tortoise beetle)
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Identity
- Preferred Scientific Name
- Paropsis atomaria Olivier, 1807
- Preferred Common Name
- Eucalyptus tortoise beetle
- Other Scientific Names
- Notoclea reticulata Marsham
- Paropsis granulosa Boisduval
- Paropsis reticulata Marsham
- Paropsis sanguinipennis Germar
Pictures
Adults
P. atomaria adults.
Mark Schutze
Adult
P. atomaria adult with dark pigmentation.
Amy Carmichael
Pupa
P. atomaria pupa.
Mark Schutze
Larvae
P. atomaria larvae.
Amy Carmichael
Larvae
Close-up of fourth-instar larvae of P. atomaria.
Amy Carmichael
Egg batch
Egg batch of P. atomaria.
Mark Schutze
Leaf damage
Characteristic 'scalloping' leaf damage caused by P. atomaria adults.
Mark Schutze
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Distribution
Host Plants and Other Plants Affected
| Host | Host status | References |
|---|---|---|
| Angophora floribunda | Other | |
| Eucalyptus blakelyi | Other | |
| Eucalyptus camaldulensis (red gum) | Main | |
| Eucalyptus cladocalyx (sugar gum) | Other | |
| Eucalyptus cloeziana (Gympie messmate) | Main | |
| Eucalyptus conica | Other | |
| Eucalyptus dives | Other | |
| Eucalyptus dunnii (Dunn's white gum) | Main | |
| Eucalyptus fastigata (brown-barrel (USA)) | Other | |
| Eucalyptus grandis (saligna gum) | Main | |
| Eucalyptus leucoxylon | Other | |
| Eucalyptus macrorhyncha | Other | |
| Eucalyptus melliodora | Other | |
| Eucalyptus pauciflora (cabbage gum) | Other | |
| Eucalyptus pilularis (blackbutt) | Main | |
| Eucalyptus polyanthemos (silver-dollar gum) | Other | |
| Eucalyptus radiata | Other | |
| Eucalyptus rossii | Other |
Symptoms
Larval aggregations may be seen on leaves of varying ages on affected trees. Young larvae, particularly first- and second-instars are usually located on the newest foliage, as they are incapable of consuming the tougher, older leaves. Aggregations may comprise individuals of varying instars. Heavy infestations are readily identifiable by the loss of foliage and high numbers of larvae and adults. Lower level infestations may be detected by the characteristic 'scalloping' of leaves caused by adult feeding, and/or the loss of young foliage in the growth areas of the tree caused by larval attack.Tree death occurs under heavy infestation, but the direct effect on the tree from heavy infestation is more likely to be a reduction in growth rate and wood quality. Tree death is more likely in younger trees, which are more susceptible to infestation.
List of Symptoms/Signs
| Symptom or sign | Life stages | Sign or diagnosis |
|---|---|---|
| Plants/Growing point/external feeding | ||
| Plants/Growing point/external feeding | ||
| Plants/Leaves/external feeding | ||
| Plants/Leaves/external feeding | ||
| Plants/Whole plant/external feeding | ||
| Plants/Whole plant/external feeding |
Prevention and Control
Biological Control
No biological control programmes have been developed for this pest species.
Host-Plant Resistance
Even though P. atomaria exists on multiple eucalypt species, certain eucalypts are more susceptible to attack than others. Where possible, less susceptible alternatives should be considered for forestry programmes. See Notes on Host Range for details.
Pheromonal Control
Little is known concerning pheromonal attractants in this species, so as a result no such means of control have been developed.
No biological control programmes have been developed for this pest species.
Host-Plant Resistance
Even though P. atomaria exists on multiple eucalypt species, certain eucalypts are more susceptible to attack than others. Where possible, less susceptible alternatives should be considered for forestry programmes. See Notes on Host Range for details.
Pheromonal Control
Little is known concerning pheromonal attractants in this species, so as a result no such means of control have been developed.
Chemical Control
Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
•
EU pesticides database (http://ec.europa.eu/food/plant/pesticides/eu-pesticides-database/)
•
PAN pesticide database (www.pesticideinfo.org)
•
Your national pesticide guide
Impact
Because the intensive cultivation of eucalypts is a fairly recent forestry initiative, there exists little to no information on the precise economic impact that P. atomaria has on the industry.
Information & Authors
Information
Published In
Copyright
Copyright © CABI. CABI is a registered EU trademark. This article is published under a Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
History
Published online: 21 November 2019
Language
English
Authors
Metrics & Citations
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Figures
Adults
P. atomaria adults.
Mark Schutze
Adult
P. atomaria adult with dark pigmentation.
Amy Carmichael
Pupa
P. atomaria pupa.
Mark Schutze
Larvae
P. atomaria larvae.
Amy Carmichael
Larvae
Close-up of fourth-instar larvae of P. atomaria.
Amy Carmichael
Egg batch
Egg batch of P. atomaria.
Mark Schutze
Leaf damage
Characteristic 'scalloping' leaf damage caused by P. atomaria adults.
Mark Schutze
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
Paropsis atomaria
Pest and Diseases Image Library, bugwood.org
Refer to Bugwood: http://www.bugwood.org/ImageUsage.html
