Pest categorisation of the species complex.

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of the species complex (RSSC), a distinguishable cosmopolitan group of bacterial plant pathogens (including , and two subspecies of ) of the family Burkholderiaceae. The RSSC causes bacterial wilt in solanaceous crops, such as potato, tomato and pepper, but can also cause wilts in other important food crops such as fruit banana, plantain banana and cassava. The pest survives in the soil, and a number of weed species can also be infected by the pest, often asymptomatically.

Pest categorisation of and .

The Panel on Plant Health performed a pest categorisation of and , two well-defined insect species in the family Curculionidae, subfamily Scolytinae (Insecta: Coleoptera). They can be identified using taxonomic keys. is present in parts of Canada and the USA, and is present in parts of the USA, Guatemala, Honduras and Mexico.

Pest categorisation of .

The EFSA Panel on Plant Health (PLH) performed a pest categorisation of , (Lepidoptera: Tortricidae), the Manchurian fruit moth, for the territory of the EU. is a well-defined species that is recognised as a major pest of spp. in Far East Russia, Eastern Siberia and northern China.

Pest categorisation of spp. (non-EU).

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of spp. (non-EU), a well-defined and distinguishable group of fungal plant pathogens of the family Pucciniaceae affecting woody species. Many different species are recognised, of which at least 14 species are considered not to be native in the European Union.

Pest categorisation of spp. (non-EU).

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of spp. (non-EU), a well-defined and distinguishable group of fungal pathogens of the family Cronartiaceae. There are at least 40 species described within the genus, of which two are considered native to the EU ( and ) and one has been introduced in the 19th century () and is now widespread in the EU - these three species are thus not part of this pest categorisation.

Pest categorisation of .

The European Commission requested EFSA to conduct a pest categorisation of (Lepidoptera: Tortricidae), an oligophagous moth whose larvae feed mostly on leaves and fruit of different Rosaceae including cultivated apples, plums, cherries and pecans. It overwinters in soil and bark crevices of its host plants. has reliable identification methods, both for adults and immature stages.

Pest categorisation of .

The Panel on Plant Health performed a pest categorisation of , the causal agent of blotch of apple, for the EU. The pest is a well-defined fungal species and methods are available for its detection and identification. is present in Canada and the continental states of the USA.

Pest categorisation of .

The EFSA Panel on Plant Health performed a pest categorisation of the peach fruit moth, Matsumura (Lepidoptera: Carposinidae) for the EU. is not currently regulated in the EU although a valid species of no economic significance that was previously mistakenly synonymised with is regulated in Annex IIAI of 2000/29 EC. is a well-defined species that is recognised as a major pest of apples, peaches and pears in eastern China, Japan, Korea and Far East Russia.

Pest categorisation of .

The Panel on Plant Health performed a pest categorisation of , the causal agent of annular leaf spot of potato, for the EU. The pest is a well-defined fungal species and reliable methods exist for its detection and identification. is present in Bolivia, Ecuador, Peru and Venezuela.

Pest categorisation of non-EU spp.

The Panel on Plant Health performed a pest categorisation of non-EU spp., a well-defined insect genus in the family Cerambycidae (Insecta: Coleoptera). Species can be identified using taxonomic keys at national and regional level, and DNA barcoding.

Pest categorisation of .

The Panel on Plant Health performed a pest categorisation of (Coleoptera: Scarabaeidae) for the EU. is a distinguishable species listed in Annex IAII of Council Directive 2000/29/EC. It is native to Japan but established in the USA in the early 20th century.

Pest categorisation of .

The European Commission requested EFSA to conduct a pest categorisation of (Lepidoptera: Pyralidae), a monophagous moth whose larvae exclusively feed on developing buds, flowers, and fruits of cultivated and wild spp. .  is a species with reliable methods available for identification.

Pest categorisation of .

The EFSA Panel on Plant Health performed a pest categorisation of (Herbst) (Coleoptera: Curculionidae), for the EU. is a well-defined species, recognised as a serious pest of stone and pome fruit in the USA and Canada where it also feeds on a range of other hosts including soft fruit (e.g.

Pest categorisation of .

The European Commission requested EFSA to conduct a pest categorisation of (Coleoptera: Curculionidae), a monophagous pest weevil whose larvae exclusively feed on mango seeds, whereas adults feed on mango foliage. is a species with reliable methods available for identification. It is regulated in the EU by Council Directive 2000/29/EC where it is listed in Annex IIB as a harmful organism whose introduction into EU Protected Zones (PZ) (Alentejo, Algarve and Madeira in Portugal, and Granada and Malaga in Spain) is banned.

Pest categorisation of spp.

The Panel on Plant Health performed a pest categorisation of spp., a well-defined insect genus of the whitefly family Aleyrodidae (Arthropoda: Hemiptera). Difficulties within the taxonomy of the genus give doubt about the ability to accurately identify some members to species level.

Pest categorisation of .

The Panel on Plant Health performed a pest categorisation of the fungus , the causal agent of smut of potato, for the EU. The identity of the pest is well established and reliable methods exist for its detection and identification. is present in Bolivia, Chile, Colombia, Ecuador, Mexico, Panama, Peru and Venezuela.

Pest categorisation of .

The Panel on Plant Health performed a pest categorisation of , the causal agent of black blight of potato, for the EU. The pest is a well-defined fungal species and reliable methods exist for its detection and identification. is present in Bolivia and Peru.

Pest categorisation of and .

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of and , which are well-defined and distinguishable tree fungal pathogens of the family Cronartiaceae. In 2018, these species were moved from the genus to the genus . These pathogens are not known to be present in the EU and are regulated in Council Directive 2000/29/EC (Annex IAI) (as non-European spp.

Pest categorisation of .

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of , a well-defined and distinguishable fungus of the family Melampsoraceae. .  is the causal agent of a leaf and twig rust of hemlocks ( spp.

Pest categorisation of spp. (non-EU).

Following a request from the European Commission, the EFSA Panel on Plant Health performed a pest categorisation of spp. (non-EU), a well-defined and distinguishable group of parasitic plant species of the family Viscaceae, also known as dwarf mistletoes. These are flowering plants parasitising a wide range of conifers of the families Pinaceae and Cupressaceae.

Author Correction: Citrus peel essential oil nanoformulations to control the tomato borer, Tuta absoluta: chemical properties and biological activity.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

Citrus peel essential oil nanoformulations to control the tomato borer, Tuta absoluta: chemical properties and biological activity.

The repeated use of conventional synthetic pesticides in crop protection leads to resistance development by pests along with a negative impact on the environment, particularly non-target arthropods. Plant-derived active compounds, such as essential oils (EOs), play a key role in sustainably controlling pests. The lethal and sublethal activity of citrus peel EOs as emulsions and included in polyethylene glycol (PEG) nanoparticles (EO-NPs) was determined against the invasive tomato pest Tuta absoluta.

Nitrogen and water inputs to tomato plant do not trigger bottom-up effects on a leafminer parasitoid through host and non-host exposures.

Background: Bottom-up and top-down forces are major components of biological control against pests in an agro-ecosystem. Understanding the multi-trophic interactions between plants and secondary consumers would help optimize pest control strategies. We manipulated nitrogen and/or water inputs to tomato plants (Solanum lycopersicum) to test whether these manipulations could trigger bottom-up effects on the parasitoid Necremnus tutae via host (Tuta absoluta) and/or non-host (Bemisia tabaci) exposures, and compared the control efficacy of N.

Insights into food webs associated with the South American tomato pinworm.

Background: The complexity of both natural and managed ecosystems involves various forms of interaction among organisms. Two or more species that exploit the same resource can engage in competitive behaviours, usually referred to as intraguild interactions. These can be direct, i.

Using Calendula officinalis as a floral resource to enhance aphid and thrips suppression by the flower bug Orius sauteri (Hemiptera: Anthocoridae).

Background: The flower bug Orius sauteri (Poppius) (Hemiptera: Anthocoridae) is widely used as a biocontrol agent against thrips and aphids infesting greenhouse vegetables in Asia. The survival and oviposition of such predators, as well as the biocontrol services they provide, may be enhanced by adding extra floral resources to the crops. In the present study we investigated the effects of the plant Calendula officinalis L.