Scirtothrips dorsalis (chilli thrips)

Hoddle, Mark S.

doi:10.1079/cabicompendium.49065

Cited by 8 publications

(6 citation statements)

References 84 publications

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“…The adult thrips specimens from different locations were identified using morphological characteristics described by Hoddle et al (2009) under a dissecting microscope (10-40× magnification). When possible, thrips samples were sent to the USDA-APHIS laboratory to reconfirm thrips identity and prepare voucher specimens.…”

Section: Specimen Processing and Identificationmentioning

confidence: 99%

Distribution of Scirtothrips dorsalis (Thysanoptera: Thripidae) cryptic species complex in the United States and reproductive host assessment of its dominant member

Kumar

Xiao

Borden³

et al. 2023

Journal of Economic Entomology

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Chilli thrips, Scirtothrips dorsalis Hood, is a cryptic species complex of at least 9 species, 2 of which (South Asia 1 and East Asia 1) have been confirmed damaging >50 plant taxa in the United States. To develop a knowledge-based management program for this pest in the United States, the objectives of the study were to (i) survey for S. dorsalis species complex in the suspected regions and (ii) assess the reproductive hosts of the predominant member available. Thrips samples received from collaborators were subjected to morpholo-molecular characterization. Of the 101 thrips populations received across the United States between 2015 and 2021, 71 populations were confirmed as S. dorsalis, with ~25% further identified as East Asia 1, compared with ~41% identified as South Asia 1, suggesting the latter species is more prevalent in the US. East Asia 1 was primarily found in samples collected from Hydrangea sp. (95%) in Massachusetts, New York, and Pennsylvania, indicating geographic range expansion in the Northeast and successful overwintering in areas with hard freezes. While assessing the host range of South Asia 1 (dominant species), 62 plant taxa were evaluated under greenhouse conditions. Among these, 40 feeding and reproductive hosts were confirmed in Florida. We also found 18 new reproductive hosts and 3 feeding hosts of S. dorsalis, which were not previously reported in the literature. The results provide insight into the increasing host range and expanded geographical distribution of S. dorsalis species and will enable the development of a species-specific monitoring and management program.

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Section: Specimen Processing and Identificationmentioning

confidence: 99%

Distribution of Scirtothrips dorsalis (Thysanoptera: Thripidae) cryptic species complex in the United States and reproductive host assessment of its dominant member

Kumar

Xiao

Borden³

et al. 2023

Journal of Economic Entomology

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“…Adults fly actively for short distancestens of meters (Masui, 2007a) and passively on wind currents, which enables long-distance spread (EFSA PLH Panel, 2014). They overwinter as adults (Okada and Kudo, 1982) in bark, litter, soil and protected in plant parts (Shibao, 1991;Holtz, 2006). The thrips cannot survive if the temperature remains below -4°C for 5 or more days (Nietschke et al, 2008).…”

Section: Biologymentioning

confidence: 99%

“…According to Shibao (1991) and Holtz (2006), adults overwinter in leaf litter and potting soil. The nursery is using peat compost (Petersfield Potting Suprememedium grade sphagnum peat), which is weed and pest free.…”

Section: A422 Possibility Of Entry With New Plants/seedsmentioning

confidence: 99%

Commodity risk assessment of Ligustrum delavayanum topiary plants grafted on Ligustrum japonicum from the UK

Bragard,

Baptista,

Chatzivassiliou

et al. 2022

EFS2

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The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as 'High risk plants, plant products and other objects'. This Scientific Opinion covers plant health risks posed by evergreen 3-to 20-year-old topiary plants of Ligustrum delavayanum grafted on L. japonicum in pots imported from the UK, taking into account the available scientific information, including the technical information provided by the UK. All pests associated with the commodity were evaluated against specific criteria for their relevance for this Scientific Opinion. One EU quarantine pest (Scirtothrips dorsalis), one EU protected zone quarantine pest [(Bemisia tabaci (European populations)] and two EU non-regulated pests (Diaprepes abbreviatus and Epiphyas postvittana) fulfilled all relevant criteria and were selected for further evaluation. For the selected pests, the risk mitigation measures described in the technical dossier from the UK were evaluated taking into account the possible limiting factors. For these pests, an expert judgement is given on the likelihood of pest freedom taking into consideration the risk mitigation measures acting on the pest, including uncertainties associated with the assessment. While the estimated degree of pest freedom varied among pests, E. postvittana was the pest most frequently expected on the commodity. The Expert Knowledge Elicitation indicated, with 95% certainty, that 9,724 or more living sculptures per 10,000 would be free from E. postvittana.

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“…Pupae are found in the leaf litter, on the axils of the leaves, in curled leaves or under the calyx of flowers and fruits (Kumar et al, 2013;MacLeod and Collins, 2006). Adults can overwinter in soil or protected in plant parts (Holtz, 2006).…”

Section: Pra Informationmentioning

confidence: 99%

Commodity risk assessment of Ficus carica plants from Israel

Bragard¹,

Dehnen‐Schmutz²,

Serio³

et al. 2021

EFS2

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The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers the plant health risks posed by the following commodities: i) dormant and free of leaves 1‐year‐old bare rooted plants and ii) free of leaves 1‐year‐old liners of Ficus carica imported from Israel, taking into account the available scientific information, including the technical information provided by Israel. The relevance of any pest for this opinion was based on evidence following defined criteria. Four EU quarantine pests, Euwallacea fornicatus, Hypothenemus leprieuri, Scirtothrips dorsalis and Spodoptera frugiperda, and 11 EU non‐regulated pests fulfilled all relevant criteria and were selected for further evaluation. For these pests, the risk mitigation measures proposed in the technical dossier from Israel were evaluated separately for bare rooted plants and for liners, taking into account the possible limiting factors. For these pests, an expert judgement was given on the likelihood of pest freedom taking into consideration the risk mitigation measures acting on the pest, including uncertainties associated with the assessment. The estimated degree of pest freedom varied among the pests evaluated. Aonidiella orientalis and Russellaspis pustulans were the most frequently expected pests on the imported bare rooted plants, and Scirtothrips dorsalis on liners. The Expert Knowledge Elicitation indicated, with 95% certainty, that between 9,585 and 10,000 bare rooted plants per 10,000 would be free of Aonidiella orientalis and Russellaspis pustulans and between 9,456 and 10,000 liners per 10,000 would be free of Scirtothrips dorsalis.

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Scirtothrips dorsalis (chilli thrips)

Abstract: This datasheet on Scirtothrips dorsalis covers Identity, Overview, Distribution, Dispersal, Hosts/Species Affected, Diagnosis, Biology & Ecology, Natural Enemies, Impacts, Prevention/Control, Further Information.

Cited by 8 publications

References 84 publications

Distribution of Scirtothrips dorsalis (Thysanoptera: Thripidae) cryptic species complex in the United States and reproductive host assessment of its dominant member

Distribution of Scirtothrips dorsalis (Thysanoptera: Thripidae) cryptic species complex in the United States and reproductive host assessment of its dominant member

Commodity risk assessment of Ligustrum delavayanum topiary plants grafted on Ligustrum japonicum from the UK

Commodity risk assessment of Ficus carica plants from Israel

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