{"id":5540,"date":"2018-06-26T16:20:14","date_gmt":"2018-06-26T23:20:14","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5540"},"modified":"2018-08-13T13:58:25","modified_gmt":"2018-08-13T20:58:25","slug":"thrips-trichromothrips-priesneri-bhatti","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5540","title":{"rendered":"Thrips | Trichromothrips priesneri (Bhatti)"},"content":{"rendered":"
California Pest Rating\u00a0 for<\/strong><\/h5>\n
Thrips | Trichromothrips priesneri <\/em><\/strong>(Bhatti)<\/strong><\/h5>\n
Thysanoptera: Thripidae <\/strong><\/h5>\n
Pest Rating: A<\/strong><\/h5>\n

\u00a0<\/strong><\/p>\n

\n

\n

PEST RATING PROFILE<\/h3>\n

Initiating Event: \u00a0\u00a0<\/strong><\/h5>\n

Trichromothrips priesneri<\/em> was tentatively reported to be established on the island of Maui, Hawaii (Mound et al., 2017).\u00a0 It is currently Q-rated, and a permanent pest rating proposal is required to support an official pest rating.<\/p>\n

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

Background:<\/u><\/strong> \u00a0<\/em>Adult T. priesneri<\/em> are bicolored, with a dark brown abdomen and wings and white (with brown markings) thorax and head (Mound et al., 2017).\u00a0 The size is probably similar to that of other Trichromothrips<\/em> species: 1-1.5 mm (Nakahara, 1993). \u00a0Very little information is available on this species.\u00a0 In Taiwan, T. priesneri<\/em> has been collected from unidentified grass and Ipomoea nil<\/em> (Wang, 2008).\u00a0 In Hawaii, it was found in a coastal, wetland area with dodder and Cyperaceae (Mound et al., 2017).\u00a0 It is not known if these plants are fed upon by the thrips.\u00a0 Other species of Trichromothrips<\/em> have been reported to feed on ferns, bamboo, orchids, and other plants (Goldarazena et al., 2012; Mound and Masumoto, 2004; Ng and Mound, 2015), although again, it is possible that some of these records do not represent feeding but rather plants that the thrips happened to be resting on.\u00a0 One species of Trichromothrips<\/em> was reported to be a pest on orchids and various greenhouse plants, but no further information was found to support this (Mound et al., 2016).<\/p>\n

Worldwide Distribution<\/u><\/strong>:<\/u><\/strong>\u00a0 Trichromothrips priesneri<\/em> is found in, and is presumably native to India (Karnataka, Madhya Pradesh, Tamil Nadu, and Uttar Pradesh states) (Rachana and Varatharaja, 2017; Tyagi and Kumar, 2016).\u00a0 It is also reported from Taiwan and Hawaii; these reports are presumed to represent introductions, although the identification of the Hawaii specimens appears to have been tentative (Mound et al., 2017; Wang, 2008).<\/p>\n

Official Control:<\/u><\/strong> Trichromothrips priesneri <\/em>is not known to be under official control anywhere.<\/p>\n

California Distribution: <\/u><\/strong>\u00a0Trichromothrips priesneri<\/em> is not known to be present in California (Symbiota Collections of Arthropods Network).<\/p>\n

California Interceptions:<\/u><\/strong>\u00a0 Trichromothrips priesneri<\/em> has not been intercepted in California (CDFA Pest and Damage Report Database, 2017).<\/p>\n

The risk Trichromothrips priesneri <\/em>wo<\/em>uld pose to California is evaluated below.<\/p>\n

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

1) Climate\/Host Interaction:<\/strong> The areas that priesneri<\/em> occurs in have a tropical or subtropical climate, suggesting that this species requires such climates. This is expected to limit the potential distribution of this species in California to a limited area.\u00a0 Not enough is known about the feeding habits of T. priesneri<\/em> to consider the presence of host plants in the potential distribution of this species in California.\u00a0 Therefore, T. priesneri <\/em>receives a Medium (2)<\/strong><\/span> in this category.<\/p>\n

\u2013 Low (1) Not likely to establish in California; or likely to establish in very limited areas.<\/p>\n

\u2013 Medium (2) <\/strong>may be able to establish in a larger but limited part of California.<\/span><\/p>\n

\u2013 High (3) likely to establish a widespread distribution in California.<\/p>\n

2) Known Pest Host Range: <\/strong>Although the collection of specimens in Taiwan from grass and Ipomoea nil<\/em> suggests that these may be host plants, too little is known about the biology of priesneri<\/em> to assess its host range. To account for uncertainty, the host range will be assumed to be moderate.\u00a0 Therefore, T. priesneri<\/em> receives a Medium (2)<\/span><\/strong> in this category.<\/p>\n

\u2013 Low (1) has a very limited host range.<\/p>\n

\u2013 Medium (2) <\/strong>has a moderate host range.<\/span><\/p>\n

\u2013 High (3) has a wide host range.<\/p>\n

3) Pest Reproductive and Dispersal Potential:<\/strong> Trichromothrips priesneri<\/em> has wings and presumably flies.\u00a0 Therefore, it receives a Medium (2)<\/strong><\/span> in this category.<\/p>\n

\u2013 Low (1) does not have high reproductive or dispersal potential.<\/p>\n

\u2013 Medium (2)<\/strong> has either high reproductive or dispersal potential.<\/span><\/p>\n

\u2013 High (3) has both high reproduction and dispersal potential.<\/p>\n

4) Economic Impact:<\/strong> Little is known about the biology of priesneri<\/em>, but it presumably feeds on living plants.\u00a0 At least one species of Trichromothrips<\/em> is reported to be a pest.\u00a0 It is possible that T. priesneri<\/em> could become a pest if it became established in California.\u00a0 If this happened, lower crop yields and increased crop production costs could result.\u00a0 Therefore, it receives a Medium (2)<\/span><\/strong> in this category.<\/p>\n

Economic Impact:\u00a0 A, B<\/span><\/strong><\/p>\n

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

\u00a0B.\u00a0<\/strong>The pest could lower crop value (includes increasing crop production costs).<\/span><\/p>\n

C. The pest could trigger the loss of markets (includes quarantines).<\/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

Economic Impact Score: 2<\/span><\/strong><\/p>\n

\u2013 Low (1) causes 0 or 1 of these impacts.<\/p>\n

\u2013 Medium (2) <\/strong>causes 2 of these impacts.<\/span><\/p>\n

\u2013 High (3) causes 3 or more of these impacts.<\/p>\n

5) Environmental Impact:<\/strong> If priesneri<\/em> became established in California and it became a pest, this could result in official or private treatment programs. Therefore, it receives a Medium (2)<\/span><\/strong> in this category.<\/p>\n

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

Environmental Impact:\u00a0 D<\/span><\/strong><\/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. The pest significantly impacts cultural practices, home\/urban gardening or ornamental plantings.<\/p>\n

Environmental Impact Score: 2<\/span><\/strong><\/p>\n

\u2013 Low (1) causes none of the above to occur.<\/p>\n

\u2013 Medium (2) <\/strong>causes one of the above to occur.<\/span><\/p>\n

\u2013 High (3) causes two or more of the above to occur.<\/p>\n

Consequences of Introduction to California for Trichromothrips priesneri<\/em>: Medium (10)<\/span><\/strong><\/h5>\n

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

\u2013Low = 5-8 points<\/p>\n

\u2013Medium = <\/strong>9-12 points<\/span><\/p>\n

\u2013High = 13-15 points<\/p>\n

6)<\/strong> Post Entry Distribution and Survey Information:<\/strong> Trichromothrips priesneri <\/em>is not known to be present in California.\u00a0 It receives a Not established (0)<\/strong> <\/span>in this category.<\/p>\n

\u2013Not established (0) <\/strong>Pest never detected in California, or known only from incursions.<\/span><\/p>\n

\u2013Low (-1) Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/p>\n

\u2013Medium (-2) 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

\u2013High (-3) 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:<\/strong><\/h5>\n

7) The final score is<\/strong> the consequences of introduction score minus the post entry distribution and survey information score: Medium (10)<\/span><\/strong><\/p>\n

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

There is a great deal of uncertainty in this proposal.\u00a0 The biology of T. priesneri<\/em> is poorly known.\u00a0 It is not known for certain what plants it feeds on.\u00a0 The potential of this thrips to cause damage to the plants it feeds on is also not known.\u00a0 Finally, it is not known how large of an area in California this species could become established in.\u00a0 It appears to require a tropical or subtropical climate, and this could prevent its establishment in California or limit establishment to a very small area.<\/p>\n

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

Trichromothrips priesneri <\/em>is a thrips that apparently feeds on living plants.\u00a0 It is not known to occur in California, and it may pose an economic and environmental threat to the state.\u00a0 For these reasons, a \u201cA\u201d rating is justified.<\/p>\n

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

Goldarazena, A., Gattesco, F., Atencio, R., and Korytowski, C.\u00a0 2012.\u00a0 An updated checklist of the Thysanoptera of Panama with comments on host associations.\u00a0 Check List 8:1232-1247.<\/p>\n

Mound, L. and Masumoto, M.\u00a0 2004.\u00a0 Trichromothrips veversae<\/em> sp. n. (Insecta, Thysanoptera), and the Botanical Significance of Insects Host-specific to Austral Bracken Fern (Pteridium esculentum<\/em>).\u00a0 Proceedings of the Linnaean Society of New South Wales 125:67-71.<\/p>\n

Mound, L. A., Matsunaga, J. N., Bushe, B., Hoddle, M. S., and Wells, A.\u00a0 2017.\u00a0 Adventive Thysanoptera species in the Hawaiian Islands: New records and putative host associations.\u00a0 Proceedings of the Hawaiian Entomological Society 49:17-28.<\/p>\n

Mound, L., Nakahara, S., and Tsuda, D. M.\u00a0 2016.\u00a0 Thysanoptera-Terebrantia of the Hawaiian Islands: an identification manual.\u00a0 ZooKeys 549:71-126.<\/p>\n

Nakahara, S.\u00a0 1993.\u00a0 The genus Dorcadothrips<\/em> (Thysanoptera: Thripidae) in Hawaii and North America with a description of a new species.\u00a0 Journal of the New York Entomological Society 101:399-409.<\/p>\n

Ng, Y. F., and Mound, L. A.\u00a0 2015.\u00a0 Species of Thripinae (Thysanoptera) from bamboo in Malaysia, with one new species and six new records.\u00a0 Zootaxa 3918:492-502.<\/p>\n

Rachana, R. and Varatharaja, R.\u00a0 2017.\u00a0 Checklist of terebrantian thrips (Insecta: Thysanoptera) recorded from India.\u00a0 Journal of Threatened Taxa 9:9748-9755.<\/p>\n

Symbiota Collections of Arthropods Network.\u00a0 Accessed March 27, 2017:\u00a0http:\/\/scan1.acis.ufl.edu<\/a><\/p>\n

Tyagi, K. and Kumar, V.\u00a0 2016.\u00a0 Thrips (Insecta: Thysanoptera) of India \u2013 An updated checklist.\u00a0 Halteres 7:64-98.<\/p>\n

Wang, C -L.\u00a0 2008.\u00a0 A new synonym and two new records for Taiwan of Thripidae related to Trichromatothrips<\/em> (Thysanoptera).\u00a0 Zootaxa 1941:67-68.<\/p>\n

\n
Author:<\/h5>\n

Kyle Beucke, 1220 N Street, Room 221, Sacramento, CA, 95814, 916-403-6741; plant.health[@]cdfa.ca.gov.<\/p>\n

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

Jason Leathers, 2800 Gateway Oaks, Sacramento CA 95833, (916) 654-1211, plant.health[@]cdfa.ca.gov<\/p>\n

\n
Comment Period:* CLOSED<\/span><\/h5>\n

6\/26\/18 \u2013 8\/10\/18<\/p>\n

\n
*NOTE:<\/span><\/h5>\n

You must be registered and logged in to post a comment. \u00a0If you have registered and have not received the registration confirmation, please contact us at\u00a0plant.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:
\n<\/strong>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: A<\/strong><\/h3>\n

 <\/p>\n

\n

Posted by ls\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

California Pest Rating\u00a0 for Thrips | Trichromothrips priesneri (Bhatti) Thysanoptera: Thripidae Pest Rating: A \u00a0 PEST RATING PROFILE Initiating Event: \u00a0\u00a0 Trichromothrips priesneri was tentatively reported to be established on the island of Maui, Hawaii (Mound et al., 2017).\u00a0 It is currently Q-rated, and a permanent pest rating proposal is required to support an official … Continue reading Thrips | Trichromothrips priesneri (Bhatti)<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":325,"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_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":[669,5,26],"tags":[675],"class_list":["post-5540","post","type-post","status-publish","format-standard","hentry","category-a-rated","category-entomology","category-thysanoptera","tag-a-rated-pest"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-1rm","jetpack-related-posts":[{"id":9805,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9805","url_meta":{"origin":5540,"position":0},"title":"Klambothrips myopori Mound & Morris: thrips","author":"Kyle Beucke","date":"April 4, 2022","format":false,"excerpt":"California Pest Rating for Klambothrips myopori Mound & Morris: thripsPest Rating: C download pest rating *NOTE You must be registered and logged in to post a comment. 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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 "D-Rated"","block_context":{"text":"D-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=673"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9593,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9593","url_meta":{"origin":5540,"position":4},"title":"Thrips maculicollis (Hood): a thrips","author":"Kyle Beucke","date":"February 18, 2022","format":false,"excerpt":"California Pest Rating for Thrips maculicollis (Hood): a thripsPest 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. Posted by tn","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":9626,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9626","url_meta":{"origin":5540,"position":5},"title":"Thrips orientalis (Bagnall): a thrips","author":"Kyle Beucke","date":"February 23, 2022","format":false,"excerpt":"California Pest Rating for Thrips orientalis (Bagnall): a thripsPest 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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