{"id":1095,"date":"2015-09-25T16:03:03","date_gmt":"2015-09-25T23:03:03","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1095"},"modified":"2022-05-16T09:38:54","modified_gmt":"2022-05-16T16:38:54","slug":"ferrisia-dasylirii-cockerell-mealybug","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1095","title":{"rendered":"Ferrisia dasylirii (Cockerell): Mealybug"},"content":{"rendered":"
California Pest Rating for<\/strong><\/h5>\n
Ferrisia dasylirii<\/em><\/strong> (Cockerell):\u00a0 Mealybug<\/strong><\/h5>\n
Hemiptera:\u00a0 Pseudococcidae<\/strong><\/h5>\n
Pest\u00a0Rating: \u00a0C<\/strong><\/h5>\n
\n
PEST RATING PROFILE<\/strong><\/h5>\n
Initiating Event:<\/strong><\/h5>\n

From 1953 to 2012, Ferrisia dasylirii<\/em> was incorrectly considered a synonym of B-rated Ferrisia virgata<\/em>.\u00a0 A recent revision corrected this and resurrected F. dasylirii<\/em> as a valid species1<\/sup>.\u00a0 On August 28, 2014 Dr. Gillian Watson notified me that she had examined specimens in the California State Collection of Arthropods and confirmed that F. dasylirii<\/em> is present in the state.\u00a0 Because this mealybug is not on CDFA\u2019s pest rating list, a pest rating proposal is needed to determine future direction.<\/p>\n

History & Status:<\/strong><\/h5>\n

Background<\/strong><\/span>:\u00a0 Ferrisia dasylirii<\/em> is a polyphagous mealybug that feeds on a wide variety of plants, including many ornamentals and some crops.\u00a0 It may be spread long distances by commerce in infested plants or plant products.<\/p>\n

Worldwide Distribution<\/strong><\/span>: Ferrisia dasylirii<\/em> appears to be of Neotropical origin.\u00a0 It is found from the United States south to Chile2<\/sup>.\u00a0 It is also found in Hawaii and several Caribbean islands2<\/sup>.<\/p>\n

Official Control<\/strong><\/span>: Ferrisia virgata<\/em> is considered a quarantine pest by Israel, Japan, and New Zealand3<\/sup>.\u00a0 It is likely that these trading partners will also consider the newly resurrected F. dasylirii<\/em> as a quarantine pest if it is intercepted.<\/p>\n

California Distribution<\/strong><\/span>:\u00a0 Specimens of Ferrisia dasylirii<\/em> in the state collection indicate that the mealybug is present in the environment of Alameda County (1962), Imperial County (1993, 2003), Los Angeles County (2000), San Bernardino County (1978, 1979, 1982), San Diego County (1978), and San Joaquin County (1980, 1995).<\/p>\n

California Interceptions<\/strong><\/span>:\u00a0 From August 19, 2014 to August 26, 2015 Ferrisia dasylirii<\/em> was intercepted 24 times by California\u2019s high risk programs and dog teams on fruit and plants shipped from Florida, Hawaii, Michigan, Mississippi, and within California.<\/p>\n

The risk Ferrisia dasylirii<\/em> would pose to California is evaluated below.<\/p>\n

Consequences of Introduction:\u00a0<\/strong><\/h5>\n

1) Climate\/Host Interaction<\/strong>: Ferrisia dasylirii<\/em> is polyphagous and suitable host plants are grown throughout California. It receives a High(3)<\/strong><\/span> in this category.<\/p>\n

Evaluate if the pest would have suitable hosts and climate to establish in California.\u00a0 Score:<\/p>\n

– Low (1)<\/strong> Not likely to establish in California; or likely to establish in very limited areas.
\n\u2013\u00a0Medium (2)<\/strong> may be able to establish in a larger but limited part of California.
\n\u2013 High (3)<\/strong> likely to establish a widespread distribution in California.<\/span><\/p>\n

2) Known Pest Host Range:<\/strong> Ferrisia dasylirii<\/em> feeds on a wide variety of plants in at least 29 families2<\/sup>.\u00a0 It receives a High(3)<\/strong><\/span> in this category.<\/p>\n

Evaluate the host range of the pest. Score:<\/p>\n

– Low (1)<\/strong> has a very limited host range.
\n– Medium (2)<\/strong> has a moderate host range.
\n\u2013 High (3)<\/strong> has a wide host range.<\/span><\/p>\n

3) Pest Dispersal Potential<\/strong>: Mealybugs reproduce rapidly and can spread locally by crawling or by wind.\u00a0 They may move long distances rapidly by hitchhiking on clothing, animals, or equipment or by the movement of infested plants or plant products.\u00a0 Ferrisia dasylirii<\/em> receives a High(3)<\/strong><\/span> in this category.<\/p>\n

Evaluate the natural and artificial dispersal potential of the pest. Score:<\/p>\n

– Low (1)<\/strong> does not have high reproductive or dispersal potential.
\n\u2013\u00a0Medium (2)<\/strong> has either high reproductive or dispersal potential.
\n– High (3)<\/strong> has both high reproduction and dispersal potential.<\/span><\/p>\n

4) Economic Impact<\/strong>: Ferrisia dasylirii<\/em> has been present in California since at least 1962 and has not emerged as a significant pest.\u00a0 Several trading partners might consider this mealybug to be a quarantine pest and its presence on plants or plant products could have trade impacts.\u00a0 No other economic impacts are expected.\u00a0 Ferrisia dasylirii<\/em> receives a Low(1)<\/strong> <\/span>in this category.<\/p>\n

Evaluate the economic impact of the pest to California using the criteria below. Score:<\/p>\n

A. \u00a0The pest could lower crop yield.
\nB. \u00a0The pest could lower crop value (includes increasing crop production costs).
\nC. \u00a0<\/strong>The pest could trigger the loss of markets (includes quarantines).<\/span>
\nD. \u00a0The pest could negatively change normal cultural practices.
\nE. \u00a0The pest can vector, or is vectored, by another pestiferous organism.
\nF. \u00a0The organism is injurious or poisonous to agriculturally important animals.
\nG. \u00a0The organism can interfere with the delivery or supply of water for agricultural uses.<\/p>\n

– Low (1)<\/strong> causes 0 or 1 of these impacts.<\/span>
\n– Medium (2)<\/strong> causes 2 of these impacts.
\n– High (3)<\/strong> causes 3 or more of these impacts.<\/p>\n

5) Environmental Impact<\/strong>: Ferrisia dasylirii<\/em> has been present in California since at least 1962 and has not had significant economic impacts.\u00a0 It receives a Low(1)<\/strong><\/span> in this category.<\/p>\n

Evaluate the environmental impact of the pest on California using the criteria below.<\/p>\n

A. \u00a0The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.
\nB. \u00a0The pest could directly affect threatened or endangered species.
\nC. \u00a0The pest could impact threatened or endangered species by disrupting critical habitats.
\nD. \u00a0The pest could trigger additional official or private treatment programs.
\nE. \u00a0The pest significantly impacts cultural practices, home\/urban gardening or ornamental plantings.<\/p>\n

Score the pest for Environmental Impact. Score:<\/p>\n

\u2013\u00a0Low (1)<\/strong> causes none of the above to occur.<\/span>
\n\u2013\u00a0Medium (2)<\/strong> causes one of the above to occur.
\n\u2013\u00a0High (3)<\/strong> causes two or more of the above to occur.<\/p>\n

Consequences of Introduction to California for Ferrisia dasylirii<\/em>:\u00a0 Medium(11)<\/span><\/strong><\/h5>\n

Add up the total score and include it here.<\/p>\n

\u2013\u00a0Low<\/strong> = 5-8 points
\n\u2013\u00a0Medium<\/strong> = 9-12 points<\/span>
\n\u2013\u00a0High<\/strong> = 13-15 points<\/p>\n

6) Post Entry Distribution and Survey Information<\/strong>: Records in the state collection indicate that Ferrisia dasylirii<\/em> is widespread in the environment of California. The mealybug receives a High(-3)<\/strong><\/span> in this category.<\/p>\n

Evaluate the known distribution in California. Only official records identified by a taxonomic expert and supported by voucher specimens deposited in natural history collections should be considered. Pest incursions that have been eradicated, are under eradication, or have been delimited with no further detections should not be included.<\/p>\n

\u2013\u00a0Not established (0)<\/strong> Pest never detected in California, or known only from incursions.
\n\u2013\u00a0Low (-1)<\/strong> Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).
\n\u2013\u00a0Medium (-2)<\/strong> Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate\/host areas.
\n\u2013\u00a0High (-3)<\/strong> Pest has fully established in the endangered area, or pest is reported in more than two contiguous or non-contiguous suitable climate\/host areas.<\/span><\/p>\n

Final Score:<\/h5>\n

The final score is the consequences of introduction score minus the post entry distribution and survey information score: Low(8) <\/strong><\/span><\/p>\n

Uncertainty:<\/strong><\/h5>\n

There is significant genetic variability within Ferrisia dasylirii<\/em>1<\/sup>.\u00a0 It is possible that some lineages could be cryptic species that are not present in California.<\/p>\n

Conclusion and Rating Justification:<\/strong><\/h5>\n

Ferrisia dasylirii<\/em> is widespread in the environment and is not having significant economic or environmental impacts.\u00a0 A \u201cC\u201d rating is justified.\u00a0\u00a0 <\/strong><\/p>\n

References: <\/strong><\/h5>\n

1<\/sup>Kaydan, M.B. and P.J. Gullan. 2012. A taxonomic revision of the mealybug genus Ferrisia<\/em> Fullaway (Hemiptera: Pseudococcidae), with descriptions of eight new species and a new genus. Zootaxa 3543: 1-65.\u00a0 http:\/\/www.mapress.com\/zootaxa\/list\/2012\/3543.html<\/a><\/p>\n

2<\/sup>SEL Catalog.\u00a0 http:\/\/www.sel.barc.usda.gov\/catalogs\/pseudoco\/Ferrisiadasylirii.htm<\/a><\/p>\n

\u00a0<\/sup>3<\/sup>USDA Phytosanitary Certificate Issuance & Tracking System (PCIT) Phytosanitary Export Database (PExD).\u00a0 https:\/\/pcit.aphis.usda.gov\/pcit\/<\/a><\/p>\n

Responsible Party:<\/h5>\n

Jason Leathers, 1220 N Street, Sacramento, CA, 95814, (916) 654-1211, plant.health[@]cdfa.ca.gov.<\/p>\n

\n

Pest Rating: C<\/h3>\n
\n

Posted by ls<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

California Pest Rating for Ferrisia dasylirii (Cockerell):\u00a0 Mealybug Hemiptera:\u00a0 Pseudococcidae Pest\u00a0Rating: \u00a0C PEST RATING PROFILE Initiating Event: From 1953 to 2012, Ferrisia dasylirii was incorrectly considered a synonym of B-rated Ferrisia virgata.\u00a0 A recent revision corrected this and resurrected F. dasylirii as a valid species1.\u00a0 On August 28, 2014 Dr. Gillian Watson notified me that … Continue reading Ferrisia dasylirii (Cockerell): Mealybug<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[18,5],"tags":[178,179,110],"class_list":["post-1095","post","type-post","status-publish","format-standard","hentry","category-hemiptera","category-entomology","tag-ferrisia-dasylirii","tag-hemiptera-pseudococcidae","tag-mealybug"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-hF","jetpack-related-posts":[{"id":7366,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7366","url_meta":{"origin":1095,"position":0},"title":"Ferrisia virgata (Cockerell): striped mealybug Hemiptera: Pseudococcidae","author":"Kyle Beucke","date":"July 17, 2020","format":false,"excerpt":"California Pest Rating for Ferrisia virgata (Cockerell): striped mealybug Pest Rating: A download pest rating *NOTE: You must be registered and logged in to post a comment. 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