Pests and mitigations for manufactured wood décor and craft products from China for importation into the United States United States Department of Agriculture Animal and Plant Health Inspection Service July 2007 Rev. 6 Agency Contact: Plant Epidemiology and Risk Analysis Laboratory Center for Plant Health Science and Technology Plant Protection and Quarantine 1730 Varsity Drive, Suite 300 Raleigh, NC 27606 China Wood Products Executive Summary Since 2002, 304 emergency action notifications have been issued for wood décor and craft products from China, including: trees manufactured from a composite of natural and synthetic materials, garden trellis towers, home and garden wood décor, and craft items. In 2004, the USDA intercepted live Callidiellum villosulum beetles from wood décor and craft products imported from China, and shipments of the commodity were recalled. Options to mitigate the risk of introducing quarantine arthropod pests in wood décor and craft products (non-palleting and non-crating) from China into the United States include fumigation and heat treatment described in the PPQ Treatment Manual. Rev. 6 July 27, 2007 1 China Wood Products Table of Contents I. Introduction ............................................................................................................................... 2 II. Background .............................................................................................................................. 3 A. Initiating Event....................................................................................................................... 3 III. Pest Categorization ................................................................................................................ 5 A. Pest Identification and Categorization................................................................................... 5 Table 1 – Arthropod Pests Associated with Wood from China .................................................. 5 B. Identification of Quarantine-Significant Pests Likely to Follow the Pathway..................... 44 Table 2 – Quarantine arthropod pests reported on manufactured wood products from China and likely to follow the pathway........................................................................................... 45 C. Likelihood and Consequences of introduction of the quarantine pests in Table 2.............. 67 Consequences of Introduction .............................................................................................. 69 Likelihood of Introduction.................................................................................................... 91 Cumulative Pest Risk Potential............................................................................................. 96 IV. Risk Mitigation (Treatment Options) for Quarantine Pests Likely to Follow the Pathway........................................................................................................................................ 97 Table 6. Categorization of Manufactured Wood Products from China and Likelihood that Internal Feeders will Follow the Pathway ............................................................................... 97 V. Conclusion............................................................................................................................. 100 VI. References ........................................................................................................................... 101 VII. Preparers and Reviewers ................................................................................................. 113 VII. Appendices........................................................................................................................ 114 Appendix 1 – Climate/Host Interaction – Hardiness Zones ................................................... 114 Rev. 6 July 27, 2007 2 China Wood Products I. Introduction Since 2002, 304 Emergency Action Notifications have been issued for wood décor and craft products from China, including: trees manufactured from a composite of natural and synthetic materials; garden trellis towers; home and garden wood décor; and craft items. In 2004, the USDA intercepted live Callidiellum villosulum manufactured wood décor and craft products imported from China and shipments of the commodity were recalled. Options to mitigate the risk of introducing quarantine arthropod pests in wood décor and craft products (non-palleting and non-crating) from China into the United States were requested of Plant Epidemiology and Risk Analysis Laboratory in 2004, with priority given to identifying mitigation options for internal and external arthropod pests. This analysis lists possible arthropod pests in the pathway, identifies risks associated with the major quarantine pests and pest groups and describes the mitigation options currently available. The products are of an undefined nature being composites of plant and synthetic materials. The species of plants used and their origin are mostly undefined and unknown. It is assumed that most of the plant species and their pests originate in China, but that is uncertain because the raw wood products may have originated in other countries and been shipped to China for manufacturing. If, in the future, any of these commodities are better defined, more detailed risk analyses can be done and mitigations options can more narrowly targeted. Rev. 6 July 27, 2007 2 China Wood Products II. Background A. Initiating Event 1. Initiating Event: Proposed Action Based on the live insect pest interceptions in 2003 and 2004 which occurred in stores at the point of sale, USDA/APHIS/PPQ Phytoisanitary Issues Management staff requested the Center for Plant Health Science and Technology (CPHST) to complete a report on pests and possible mitigations for home and garden décor and handcrafted manufactured wood product items from China on November 24, 2004. A letter of notification (February 15, 2005) to Mr. Lu Houlin, Deputy Director General, Department for Supervision on Animal and Plant Quarantine, China, indicates that effective on April 1, 2005, USDA APHIS will suspend the importation of wood craft items that contain logs, limbs, branches, or twigs greater than 1 centimeter (≈0.39 inches) in diameter and having intact bark. Over the past 38 months (2002, 2003, 2004, early 2005), 304 Emergency Action Notifications (EANs) were issued on manufactured wood products from China. The pests listed in these EANs are noted in Table 1 as having been intercepted. 2. Decision to initiate this report It has been demonstrated by the interceptions that the importation of home and garden décor and wooden handicraft items provide a pathway for the entry and possible establishment of potentially harmful live plant arthropod pests. Mitigation options are required for trade to continue. 3. Commodity Information The article in question consist of manufactured wood products including articles with/without bark, with/without seeds, and with/without non-wood components of varied size (e.g., plastic, paper, metal parts). For each item, the degree of processing, the tree species and parts used, and the geographic origins are unspecified and unknown. Because of the similarity between some of these products and wood packaging material, pests of wood packaging material are included here. The following partial list categorizes manufactured wood products imported into the United States from China within the last ten years: Categorization of Manufactured Wood Products from China • Animal Artifacts (deer, other animals made from wood) • Art Décor/Wood Carvings • Baskets/Boxes • Bird Houses (with supporting poles) • Manufactured Christmas Trees (boles with wood and bark, some with natural conifer cones attached) • Garden and Lawn/Patio (Rustic) Furniture • Potpourri (possibly including wood/seeds of trans-shipped origins) • Silk Trees (typically Ficus, could include wood not of Chinese origins) • Trellis Towers (including garden fencing, some hardwoods, mainly of bamboo species) Rev. 6 July 27, 2007 3 China Wood Products • Bamboo slats and bamboo garden stakes • Unspecified Wood Items (varying in size, origin, and description) Rev. 6 July 27, 2007 4 China Wood Products III. Pest Categorization A. Pest Identification and Categorization The accepted international definition of a quarantine pest is: “…a pest of potential economic importance to the area endangered thereby and not yet present there, or present but not widely distributed and being officially controlled” (IPPC, 1997). Table 1 is a collection of data {from PPQ interception records [pests found in cargo at a port of entry and reported in the USDA Database PEST ID (Previously known as PIN 309)], various journal articles, texts, online databases, etc.} of pests that are known to be found on/in trees, shrubs, bamboo, wood, and wood products from China. All pests in Table 1 are likely to be found on/in manufactured wood products from China (the pathway), but not all species have quarantine status. Table 1 – Arthropod Pests Associated with Wood from China United Likely to China and US Plant Part(s) Intercepted States Pest Follow Distribution Association in the US Quarantine Pathway Pest Arthropods: Acarina Bud and Shoot Acalitus phloeocoptes CH (Hong et al., 1. Galls (Hong et No Yes Yes (Nalepa) Eriophyoidea 1996) al., 1996) Aceria abalis (Keifer) CH, US (Hong Galls (Hong et 2. No No Yes Eriophyoidea et al., 1996) al., 1996) Aceria bromi (Kuang et CH (Hong et al., Galls (Hong et 3. No Yes
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