Published: June 15, 2026
The Club wishes to draw Members’ attention to important regulatory considerations as the 2026 Flighted Spongy Moth Complex (FSMC) season approaches. Ships scheduled to call at ports in Argentina, Australia, Canada, Chile, New Zealand, and the United States must ensure full compliance with the respective FSMC regulations issued by these countries.
Members should note that, despite similar specified risk periods, each country may have its own specific requirements detailing how the risk period is imposed and/or which countries in the specified risk period will be the target for inspection.
See example of Joint Memo by Canada (CFIA_ACIA) and USDA
The table below sets out the regulated areas and specified risk periods, which refer to the time period during which there is a risk of FSMC flight and egg mass deposition.
Country | Port or Prefecture | Specified Risk Period |
Russian Far East | Nakhodka, Ol'ga, Plastun, Pos'yet, Russkiy Island, Slavyanka, Vanino, Vladivostok, Vostochny, Zarubino, Kozmino | June 15 to October 15 |
People's Republic of China | All ports in northern China, including all ports on or north of 31°15' | June 1 to September 30 |
Republic of Korea | All ports | June 1 to September 30 |
Japan — Northern | Akita, Aomori, Fukushima, Hokkaido, Iwate, Miyagi, Yamagata | June 15 to October 15 |
Japan — Central | Aichi, Chiba, Fukui, Ibaraki, Ishikawa, Kanagawa, Mie, Niigata, Shizuoka, Tokyo, Toyama | June 1 to September 30 |
Japan — Southern | Ehime, Fukuoka, Hiroshima, Hyogo, Kagawa, Kagoshima, Kochi, Kumamoto, Kyoto, Miyazaki, Nagasaki, Oita, Okayama, Osaka, Saga, Shimane, Tokushima, Tottori, Wakayama, Yamaguchi | May 15 to August 31 |
Japan — Far Southern | Okinawa | May 25 to June 30 |
Risk Areas and Requirements
As in previous years, ships that have called at ports within FSMC regulated areas during the designated risk period, either in the current or the preceding year, will be categorised as high risk. Such vessels are generally required to obtain an FSMC free certificate from the final port visited within the high risk region prior to sailing to one of the regulating countries.
Vessels should ensure that they arrive free of FSMC. In addition to certification, crews are strongly advised to carry out thorough self-inspections and to remove and properly dispose of any egg masses or other life stages prior to arrival.
While the countries issuing FSMC regulations may have similar specified risk periods, these regulations are not yet fully harmonised. Each country may have its own particular requirements concerning the implementation of the risk period or may target different countries for inspection within these periods. It is essential for Members to remain up to date with the detailed requirements of each country to ensure ongoing compliance.
When preparing to call a port located within an FSMC risk area, Members are strongly advised to consult with their local agents and Club correspondents. This will help ensure that all necessary requirements for the forthcoming voyage are met prior to departure from the FSMC risk area. Special consideration should also be given to the relevant risk periods during the planning process.
Members should also ensure that accurate port of call information, typically covering the previous two years, is maintained and submitted in accordance with the relevant regulatory requirements.
Updates for the 2026 Season
United States & Canada
Ships should expect increased enforcement intensity, with tougher inspection practices including closer scrutiny of self-inspection records. There is a higher likelihood of arrival inspections and stricter verification of port of call data, driven by forecasts of potential outbreak level FSMC populations in 2026.
Australia
Australia has changed its heightened FSMC surveillance window earlier, with it starting 1 January 2026 and running until 31 May 2026. In addition, the Australian Department of Agriculture, Fisheries and Forestry (DAFF) has expanded automated pre-arrival targeting and has tighter digital screening. Australia will be targeting any ship that has visited a port in Eastern Russia between 40°N and 60°N, or west of 147°E, anytime between 1 July and 30 September in the previous two calendar years.
New Zealand
New Zealand targets only ships that have visited a FSMC regulated area during the specified risk period in the last 12 months.
Resources
Please note that the below is a non-exhaustive list of some useful websites:
Introduction to FSMC - BIMCO Member Access is required
Flighted Spongy Moth Complex Season 2026 – be prepared
Argentina
Argentinian FSMC regulations - BIMCO Member Access is required
Lymantria Buques | Argentina.gob.ar
Australia
Australian FSMC regulations - BIMCO Member Access is required
Flighted Spongy Moth Complex - DAFF
Canada and United States of America
Canadian FSMC regulations - BIMCO Member Access is required
USA FSMC regulations - BIMCO Member Access is required
Flighted Spongy Moth Complex | Animal and Plant Health Inspection Service
Chile
Chilean FSMC regulations - BIMCO Member Access is required
Agricultural and Livestock Service (SAG) - Spongy Moth
SAG FSMC Inspection Requirements
New Zealand
New Zealand FSMC regulations - BIMCO Member Access is required
Hitchhiker pests | NZ Government
Spongy Moth – what you need to know
Supportive Information
For further information on this or other Loss Prevention topics please contact the Loss Prevention Department, Steamship Insurance Management Services Ltd.
Tel: +44 20 7247 5490 Email: [email protected]
Acknowledgement:
With special thanks to Dr Bev Mackenzie, Head of Intergovernmental Engagement, BIMCO
The information contained in this publication is provided for general informational and guidance purposes only and does not constitute legal or professional advice. While every effort has been made to ensure the accuracy and reliability of the content at the time of publication, no guarantee is given that the information is complete, current or applicable to all circumstances.