Pest categorisation of Cephalcia lariciphila
Abstract The Panel on Plant health performed a pest categorisation of the larch web‐spinning sawfly Cephalcia lariciphila (Hymenoptera: Pamphiliidae) for the EU. The insect has been reported in 11 EU Member States (MSs). It is a quarantine pest listed in Annex IIB of Council Directive 2000/29/EC. Pr...
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-12-01
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| Series: | EFSA Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.2903/j.efsa.2017.5106 |
| _version_ | 1819118734086766592 |
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| author | EFSA Panel on Plant Health (PLH) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van der Werf Jonathan West Stephan Winter Andrea Battisti Virág Kertész Mitesha Aukhojee Jean‐Claude Grégoire |
| author_facet | EFSA Panel on Plant Health (PLH) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van der Werf Jonathan West Stephan Winter Andrea Battisti Virág Kertész Mitesha Aukhojee Jean‐Claude Grégoire |
| author_sort | EFSA Panel on Plant Health (PLH) |
| collection | DOAJ |
| description | Abstract The Panel on Plant health performed a pest categorisation of the larch web‐spinning sawfly Cephalcia lariciphila (Hymenoptera: Pamphiliidae) for the EU. The insect has been reported in 11 EU Member States (MSs). It is a quarantine pest listed in Annex IIB of Council Directive 2000/29/EC. Protected zones are in place in Ireland and the UK (Northern Ireland, Isle of Man and Jersey). C. lariciphila can feed on all species of the genus Larix. There have been reported outbreaks in the Czech Republic, Germany, the Netherlands and the UK (England and Wales) in plantations of European larch (Larix decidua) and Japanese larch (Larix kaempferi = Larix leptolepis). C. lariciphila is absent in the protected zones. The pest can enter the protected zones by human‐assisted spread or by natural spread from EU areas where the pest is present. Plants for planting are considered the most important pathway for the pest. The pest can establish in the protected zones because the climatic conditions are similar to those of the 11 MSs where C. lariciphila is established, and the pest's main host plants are present. The prepupae overwinter in the litter, the adults emerge during May–June, and each female lays 30–40 eggs in slits in mature needles. The larvae feed on the needles through four instars. There is one generation per year; some of the prepupae undergo prolonged diapause for more than 1 year. The impact where the pest occurs is mainly related to the loss of tree growth following defoliation, while tree mortality was locally observed only after repeated defoliation. However, impact is likely to be mitigated by local biological control agents. All criteria assessed by EFSA above for consideration as a potential protected zone quarantine pest and as a potential regulated non‐quarantine pest were met. |
| first_indexed | 2024-12-22T05:53:35Z |
| format | Article |
| id | doaj.art-3221433556c94ed089aeded247c68573 |
| institution | Directory Open Access Journal |
| issn | 1831-4732 |
| language | English |
| last_indexed | 2024-12-22T05:53:35Z |
| publishDate | 2017-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | EFSA Journal |
| spelling | doaj.art-3221433556c94ed089aeded247c685732022-12-21T18:36:47ZengWileyEFSA Journal1831-47322017-12-011512n/an/a10.2903/j.efsa.2017.5106Pest categorisation of Cephalcia lariciphilaEFSA Panel on Plant Health (PLH)Michael JegerClaude BragardDavid CaffierThierry CandresseElisavet ChatzivassiliouKatharina Dehnen‐SchmutzGianni GilioliJosep Anton Jaques MiretAlan MacLeodMaria Navajas NavarroBjörn NiereStephen ParnellRoel PottingTrond RafossVittorio RossiGregor UrekAriena Van BruggenWopke Van der WerfJonathan WestStephan WinterAndrea BattistiVirág KertészMitesha AukhojeeJean‐Claude GrégoireAbstract The Panel on Plant health performed a pest categorisation of the larch web‐spinning sawfly Cephalcia lariciphila (Hymenoptera: Pamphiliidae) for the EU. The insect has been reported in 11 EU Member States (MSs). It is a quarantine pest listed in Annex IIB of Council Directive 2000/29/EC. Protected zones are in place in Ireland and the UK (Northern Ireland, Isle of Man and Jersey). C. lariciphila can feed on all species of the genus Larix. There have been reported outbreaks in the Czech Republic, Germany, the Netherlands and the UK (England and Wales) in plantations of European larch (Larix decidua) and Japanese larch (Larix kaempferi = Larix leptolepis). C. lariciphila is absent in the protected zones. The pest can enter the protected zones by human‐assisted spread or by natural spread from EU areas where the pest is present. Plants for planting are considered the most important pathway for the pest. The pest can establish in the protected zones because the climatic conditions are similar to those of the 11 MSs where C. lariciphila is established, and the pest's main host plants are present. The prepupae overwinter in the litter, the adults emerge during May–June, and each female lays 30–40 eggs in slits in mature needles. The larvae feed on the needles through four instars. There is one generation per year; some of the prepupae undergo prolonged diapause for more than 1 year. The impact where the pest occurs is mainly related to the loss of tree growth following defoliation, while tree mortality was locally observed only after repeated defoliation. However, impact is likely to be mitigated by local biological control agents. All criteria assessed by EFSA above for consideration as a potential protected zone quarantine pest and as a potential regulated non‐quarantine pest were met.https://doi.org/10.2903/j.efsa.2017.5106European UnionEuropean web‐spinning larch sawflyPamphiliidaepest riskplant healthplant pest |
| spellingShingle | EFSA Panel on Plant Health (PLH) Michael Jeger Claude Bragard David Caffier Thierry Candresse Elisavet Chatzivassiliou Katharina Dehnen‐Schmutz Gianni Gilioli Josep Anton Jaques Miret Alan MacLeod Maria Navajas Navarro Björn Niere Stephen Parnell Roel Potting Trond Rafoss Vittorio Rossi Gregor Urek Ariena Van Bruggen Wopke Van der Werf Jonathan West Stephan Winter Andrea Battisti Virág Kertész Mitesha Aukhojee Jean‐Claude Grégoire Pest categorisation of Cephalcia lariciphila EFSA Journal European Union European web‐spinning larch sawfly Pamphiliidae pest risk plant health plant pest |
| title | Pest categorisation of Cephalcia lariciphila |
| title_full | Pest categorisation of Cephalcia lariciphila |
| title_fullStr | Pest categorisation of Cephalcia lariciphila |
| title_full_unstemmed | Pest categorisation of Cephalcia lariciphila |
| title_short | Pest categorisation of Cephalcia lariciphila |
| title_sort | pest categorisation of cephalcia lariciphila |
| topic | European Union European web‐spinning larch sawfly Pamphiliidae pest risk plant health plant pest |
| url | https://doi.org/10.2903/j.efsa.2017.5106 |
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