{"id":2308,"date":"2016-07-25T16:19:50","date_gmt":"2016-07-25T23:19:50","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2308"},"modified":"2022-05-16T10:11:01","modified_gmt":"2022-05-16T17:11:01","slug":"mycetaspis-personata-comstock-masked-scale","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2308","title":{"rendered":"Mycetaspis personata (Comstock): Masked Scale"},"content":{"rendered":"
California Pest Rating for<\/strong><\/h5>\n
Mycetaspis personata<\/em><\/strong> (Comstock):\u00a0 Masked Scale<\/strong><\/h5>\n
Hemiptera: Diaspididae<\/strong><\/h5>\n
Pest Rating: \u00a0A<\/strong><\/h5>\n
\n
PEST RATING PROFILE<\/strong><\/h5>\n
Initiating Event: <\/strong><\/h5>\n

Mycetaspis personata<\/em> is commonly intercepted at CDFA\u2019s border stations and presently has a temporary Q-rating.\u00a0 A pest rating proposal is required to assign a permanent pest rating.<\/p>\n

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

Background<\/u>:<\/strong>\u00a0 Mycetaspis personata<\/em> is a polyphagous armored scale insect that typically feeds on leaves1,2<\/sup>.\u00a0 It has been considered a pest of citrus in Madeira and mango in Egypt1,2<\/sup>.\u00a0 Known hosts include:\u00a0 Anacardiaceae<\/strong>: Anacardium <\/em>spp.1<\/sup>, mango (Mangifera indica<\/em>1,2<\/sup>), Mangifera <\/em>spp.1,2<\/sup>, Tapirira guianensis<\/em>2<\/sup>; Annonaceae<\/strong>: Annona <\/em>spp.1,2<\/sup>; Arecaceae<\/strong>: Areca <\/em>spp.1,2<\/sup>, Chrysalidocarpus lutescens<\/em>1,2<\/sup>, coconut (Cocos nucifera<\/em>1,2<\/sup>); Cocos <\/em>spp.1,2<\/sup>, latan palm (Latania <\/em>sp.1,2<\/sup>); Phoenix <\/em>spp.1,2<\/sup>, palmetto (Sabal <\/em>spp.1,2<\/sup>), walking palm (Socratea exorrhiza<\/em>)2<\/sup>; Bignoniaceae<\/strong>: Catalpa longisiliqua<\/em>1,2<\/sup>; Bromeliaceae<\/strong>: Tillandsia <\/em>spp.1,2<\/sup>; Fabaceae<\/strong>: Bauhinia <\/em>spp.1,2<\/sup>; Guttiferae<\/strong>: Mammea<\/em> americana<\/em>2<\/sup>; Lauraceae<\/strong>: Persea <\/em>spp.1,2<\/sup>; Malpighiaceae<\/strong>: Banisteria laurifolia<\/em>1,2<\/sup>; Monimiaceae<\/strong>: Tambourissa <\/em>spp.1,2<\/sup>; Moraceae<\/strong>: Cuban-laurel (Ficus retusa<\/em>1,2<\/sup>), weeping fig (Ficus benjamina<\/em>1,2<\/sup>), Ficus <\/em>spp.1,2<\/sup>; Musaceae<\/strong>: Musa <\/em>spp.1,2<\/sup>; Myristicaceae<\/strong>: Virola<\/em> sebifera<\/em>2<\/sup>; Myrtaceae<\/strong>: Eugenia <\/em>spp.1,2<\/sup>, pineapple guava (Feijoa selloviana<\/em>1,2<\/sup>); Oleaceae<\/strong>: jasmine (Jasminum <\/em>spp.1,2<\/sup>); Rutaceae<\/strong>: Citrus <\/em>spp.1,2<\/sup>; Sapotaceae<\/strong>: sapote (Achras sapota<\/em>1,2<\/sup>); Theaceae<\/strong>: Japanese camellia (Camellia japonica<\/em>1,2<\/sup>).\u00a0 Mycetaspis personata<\/em> may be transported long distances with infested plants or fresh plant parts are moved.<\/p>\n

Worldwide Distribution<\/u>:<\/strong> Mycetaspis personata<\/em> has a widespread distribution in South America and the Caribbean1,2<\/sup>.\u00a0 It has spread to several African and Asian nations and is established Mexico, Hawaii, and Florida1,2<\/sup>.<\/p>\n

Official Control<\/u>:<\/strong> Mycetaspis personata<\/em> is listed as a harmful organism by Japan, the Republic of Korea, and Taiwan3<\/sup>.<\/p>\n

California Distribution<\/u>:<\/strong>\u00a0 Mycetaspis personata<\/em> has never been detected in the environment of California.<\/p>\n

California Interceptions<\/u>:<\/strong>\u00a0 Mycetaspis personata<\/em> is frequently intercepted by CDFA\u2019s border stations and dog teams on fruit.\u00a0 It is most often intercepted on mango, but has also been intercepted on other fruit including lime, coconut, and avocado.<\/p>\n

The risk Mycetaspis personata<\/em> (masked scale) would pose to California is evaluated below.<\/p>\n

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

1) Climate\/Host Interaction<\/span>:<\/strong> Host plants of Mycetaspis personata<\/em> are grown throughout California and the scale insect can be expected to establish wherever they are grown. 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.<\/p>\n

– Medium (2)<\/strong> may be able to establish in a larger but limited part of California.<\/p>\n

– High (3)<\/strong> likely to establish a widespread distribution in California.<\/span><\/p>\n

2) Known Pest Host Range<\/span>:<\/strong> Mycetaspis personata<\/em> is polyphagous on a wide variety of plants in at least 18 families.\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.<\/p>\n

– Medium (2)<\/strong> has a moderate host range.<\/p>\n

– High (3)<\/strong> has a wide host range.<\/span><\/p>\n

3) Pest Dispersal Potential<\/span>:<\/strong> Scale insects are capable of rapid reproduction and can be transported long distances when infested plants or fresh plant parts are moved.\u00a0 They may also disperse locally by crawling, wind, or by hitchhiking on clothing, equipment, or animals.\u00a0 Mycetaspis personata<\/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.<\/p>\n

– Medium (2)<\/strong> has either high reproductive or dispersal potential.<\/p>\n

– High (3)<\/strong> has both high reproduction and dispersal potential.<\/span><\/p>\n

4) Economic Impact<\/span>:<\/strong> Mycetaspis personata<\/em> is considered a quarantine pest by several of California\u2019s trading partners.\u00a0 This insect could disrupt markets for Californian agricultural commodities if it were to establish in the state.\u00a0 It may also increase crop production costs by triggering additional management practices to ensure that crops are free from the pest.\u00a0 Mycetaspis personata<\/em> receives a Medium (2)<\/strong> <\/span>in this category.<\/p>\n

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

A. The pest could lower crop yield.<\/p>\n

B<\/strong>. The pest could lower crop value (includes increasing crop production costs).<\/span><\/p>\n

C<\/strong>. The pest could trigger the loss of markets (includes quarantines).<\/span><\/p>\n

D. The pest could negatively change normal cultural practices.<\/p>\n

E. The pest can vector, or is vectored, by another pestiferous organism.<\/p>\n

F. The organism is injurious or poisonous to agriculturally important animals.<\/p>\n

G. The 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.<\/p>\n

– Medium (2)<\/strong> causes 2 of these impacts.<\/p>\n

– High (3)<\/strong> causes 3 or more of these impacts.<\/p>\n

5) Environmental Impact<\/span>:<\/strong> Mycetaspis personata<\/em> is not expected to lower biodiversity, disrupt natural communities, or change ecosystem processes.\u00a0 It is not expected to directly affect threatened or endangered species or disrupt critical habitats.\u00a0 It may trigger additional treatment programs in agriculture and by residents who find infested plants unsightly.\u00a0 Masked scale may also significantly impact ornamental plantings.\u00a0 It receives a High (3)<\/strong><\/span> in this category.<\/p>\n

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

A. The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.<\/p>\n

B. The pest could directly affect threatened or endangered species.<\/p>\n

C. The pest could impact threatened or endangered species by disrupting critical habitats.<\/p>\n

D<\/strong>. The pest could trigger additional official or private treatment programs.<\/span><\/p>\n

E<\/strong>. The pest significantly impacts cultural practices, home\/urban gardening or ornamental plantings.<\/span><\/p>\n

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

– Low (1)<\/strong> causes none of the above to occur.<\/p>\n

– Medium (2)<\/strong> causes one of the above to occur.<\/p>\n

– High (3)<\/strong> causes two or more of the above to occur.<\/span><\/p>\n

Consequences of Introduction to California for Mycetaspis personata<\/em> (Masked Scale): High (14)<\/span><\/strong><\/h5>\n

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

–Low<\/strong> = 5-8 points<\/p>\n

–Medium<\/strong> = 9-12 points<\/p>\n

–High<\/strong> = 13-15 points<\/span><\/p>\n

6) Post Entry Distribution and Survey Information<\/span>:<\/strong> Mycetaspis personata<\/em> has never been found in California and receives a Not established (0)<\/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

–Not established (0)<\/strong> Pest never detected in California, or known only from incursions.<\/span><\/p>\n

–Low (-1)<\/strong> Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/p>\n

–Medium (-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.<\/p>\n

–High (-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.<\/p>\n

Final Score:<\/h5>\n

The final score is the consequences of introduction score minus the post entry distribution and survey information score: High (14)<\/strong><\/span><\/p>\n

Uncertainty: \u00a0<\/strong><\/h5>\n

There have been no recent formal surveys for scale insects in California.\u00a0 It is possible that mask scale could be established in some localities.<\/p>\n

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

Mycetaspis personata<\/em> has never been found in California and may have significant economic and environmental impacts if it were to establish here. An \u201cA\u201d rating is justified.<\/p>\n

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

1<\/sup> Miller, Dug, Yair Ben-Dov, Gary Gibson, and Nate Hardy.\u00a0 ScaleNet.\u00a0 http:\/\/scalenet.info\/validname\/Mycetaspis\/personata\/
\n<\/a>http:\/\/scalenet.info\/catalogue\/Mycetaspis%20personata\/<\/a><\/p>\n

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

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

\n
Responsible Party:<\/h5>\n

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

\n
Comment Format:<\/h5>\n

\u2666 \u00a0Comments should refer to the appropriate California Pest Rating Proposal Form subsection(s)\u00a0being commented on, as shown below.<\/p>\n

Example Comment<\/span>:\u00a0<\/strong><\/p>\n

Consequences of Introduction: \u00a01. Climate\/Host Interaction:\u00a0[Your comment that relates to \u201cClimate\/Host Interaction\u201d here.<\/em>]<\/p>\n

\u2666 \u00a0Posted comments will not be able to be viewed immediately.<\/p>\n

\u2666 \u00a0Comments may not be posted if they:<\/p>\n

Contain inappropriate language which is not germane to\u00a0the pest rating proposal;<\/p>\n

Contains defamatory, false, inaccurate, abusive, obscene, pornographic,\u00a0sexually oriented, threatening, racially offensive, discriminatory or illegal\u00a0material;<\/p>\n

Violates agency regulations prohibiting sexual harassment or other forms\u00a0of discrimination;<\/p>\n

Violates agency regulations prohibiting workplace violence, including threats.<\/p>\n

\u2666 \u00a0Comments may be edited prior to posting to ensure they are entirely germane.<\/p>\n

\u2666 \u00a0Posted comments shall be those which have been approved in content and posted to the\u00a0website to be viewed, not just submitted.<\/p>\n

\n

Pest Rating: \u00a0A<\/strong><\/h3>\n
\n

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

California Pest Rating for Mycetaspis personata (Comstock):\u00a0 Masked Scale Hemiptera: Diaspididae Pest Rating: \u00a0A PEST RATING PROFILE Initiating Event: Mycetaspis personata is commonly intercepted at CDFA\u2019s border stations and presently has a temporary Q-rating.\u00a0 A pest rating proposal is required to assign a permanent pest rating. History & Status: Background:\u00a0 Mycetaspis personata is a polyphagous … Continue reading Mycetaspis personata (Comstock): Masked Scale<\/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_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_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}},"categories":[18,5],"tags":[104,186,52,374,373],"class_list":["post-2308","post","type-post","status-publish","format-standard","hentry","category-hemiptera","category-entomology","tag-diaspididae","tag-hemiptera","tag-insects-and-mites","tag-masked-scale","tag-mycetaspis-personata"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-Be","jetpack-related-posts":[{"id":7442,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7442","url_meta":{"origin":2308,"position":0},"title":"Thysanofiorinia leei Williams: lychee scale Hemiptera: Diaspididae","author":"Kyle Beucke","date":"August 18, 2020","format":false,"excerpt":"California Pest Rating Profile for Thysanofiorinia leei Williams: lychee scale Hemiptera: DiaspididaePest Rating: A download pest rating Profile *NOTE: You must be registered and logged in to post a comment. 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Matsunaga, pers. comm.).\u00a0 It is currently Q-rated, and a permanent pest rating proposal is required\u2026","rel":"","context":"In "A-Rated"","block_context":{"text":"A-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=669"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2783,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2783","url_meta":{"origin":2308,"position":3},"title":"Howardia biclavis (mining scale)","author":"Raj Randhawa","date":"November 2, 2016","format":false,"excerpt":"California Pest Rating for Howardia biclavis (mining scale) Hemiptera: Diaspididae Pest Rating: A PEST RATING PROFILE Initiating Event: Howardia biclavis has an internal CDFA rating of A. A pest rating proposal is required to support an official pest rating. History & Status: Background:\u00a0 Howardia biclavis is an armored scale insect.\u2026","rel":"","context":"In "Hemiptera"","block_context":{"text":"Hemiptera","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=18"},"img":{"alt_text":"5119004-mining-scale(Howardia-biclavis)","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/5119004-mining-scaleHowardia-biclavis-275x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":7438,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7438","url_meta":{"origin":2308,"position":4},"title":"Ceroplastes dugesii Lichtenstein: Duges wax scale Hemiptera: Coccidae","author":"Kyle Beucke","date":"August 18, 2020","format":false,"excerpt":"California Pest Rating Profile for Ceroplastes dugesii Lichtenstein: Dugg wax scale Hemiptera: CoccidaePest Rating: A download pest rating Profile *NOTE: You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. Posted by ka","rel":"","context":"In "A-Rated"","block_context":{"text":"A-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=669"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7493,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7493","url_meta":{"origin":2308,"position":5},"title":"Coccus capparidis (Green): soft scale Hemiptera: Coccidae","author":"Kyle Beucke","date":"September 1, 2020","format":false,"excerpt":"California Pest Rating for Coccus capparidis (Green): soft scalePest Rating: A download pest rating *NOTE: You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. 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