{"id":5322,"date":"2018-04-30T14:12:53","date_gmt":"2018-04-30T21:12:53","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5322"},"modified":"2018-06-22T12:50:00","modified_gmt":"2018-06-22T19:50:00","slug":"thrips-indusiothrips-seshadrii-priesner","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5322","title":{"rendered":"Thrips | Indusiothrips seshadrii Priesner"},"content":{"rendered":"
California Pest Rating\u00a0 for<\/strong><\/h5>\n
Indusiothrips seshadrii <\/em><\/strong>Priesner: thrips<\/strong><\/h5>\n
Thysanoptera: Thripidae<\/strong><\/h5>\n
Pest Rating: A<\/strong><\/h5>\n

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

\n

\n

PEST RATING PROFILE<\/h5>\n
Initiating Event: <\/strong><\/h5>\n

A specimen of Indusiothrips seshadrii<\/em> was recently found on Oahu Island, 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> \u00a0Indusiothrips seshadrii<\/em> is a small (~1 mm in length), whitish-yellow thrips (Priesner, 1952).\u00a0 It has been reported from unidentified ferns in India and Hawaii (Mound et al., 2017; Priesner, 1952).\u00a0 This species appears to be rarely collected, and little additional information is available regarding its biology.<\/p>\n

Worldwide Distribution<\/u><\/strong>:<\/u><\/strong>\u00a0 Indusiothrips seshadrii<\/em> is known from, and is presumed native to India and Malaysia (Kud\u00f4, 1992; Priesner, 1952).\u00a0 It has been introduced to Oahu, Hawaii (Mound et al., 2017).<\/p>\n

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

California Distribution: <\/u><\/strong>\u00a0Indusiothrips seshadrii<\/em> is not known to occur in California.<\/p>\n

California Interceptions:<\/u><\/strong>\u00a0 Indusiothrips seshadrii <\/em>has not been intercepted in California.<\/p>\n

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

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

1) Climate\/Host Interaction:<\/strong> Although seshadrii<\/em> is presumed to feed on ferns, the species it feeds on are not known. California has many species of native ferns, and it is possible that I. seshadrii<\/em> could find suitable host plants over much of the state. \u00a0However, this thrips is currently known to be limited to areas with a tropical climate.\u00a0 For this reason, I. seshadrii <\/em>is not expected to be capable of establishing over more than a very limited area.\u00a0 Therefore, Indusiothrips seshadrii <\/em>receives a Low (1)<\/strong> <\/span>in this category.<\/p>\n

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

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

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

2) Known Pest Host Range: <\/strong>Indusiothrips seshadrii<\/em> may feed on ferns. However, it is not known what species in particular act as hosts.\u00a0 The fact that it is known from India, Malaysia, and Hawaii suggests that more than a single species of fern is involved.\u00a0 To incorporate this uncertainty, host range will be considered to be moderate. \u00a0Therefore, it 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) has a moderate host range.<\/strong><\/span><\/p>\n

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

3) Pest Dispersal Potential:<\/strong> This species has wings and presumably flies (Priesner, 1952).\u00a0 Therefore, it receives a Medium (2)<\/span><\/strong> in this category.<\/p>\n

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

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

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

4) Economic Impact:<\/strong> Indusiothrips seshadrii<\/em> is presumed to feed on ferns.\u00a0 It has not been reported to be a pest, and it does not appear to pose an economic threat to California. \u00a0Therefore, it receives a Low (1)<\/span> <\/strong>in this category.<\/p>\n

Economic Impact:<\/p>\n

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

B. The pest could lower crop value (includes increasing crop production costs).<\/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: 1<\/span><\/strong><\/p>\n

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

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

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

5) Environmental Impact:<\/strong> Indusiothrips seshadrii<\/em> is presumed to feed on ferns. No reports were found indicating the extent, if any, of damage inflicted by these thrips on ferns.\u00a0 However, this could simply be because the host plants are not economically significant.\u00a0 There are many rare, native ferns in California.\u00a0 If this thrips became established in California, it could feed on and impact our native ferns.\u00a0 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 B<\/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.<\/strong><\/span><\/p>\n

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

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

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

Score the pest for Environmental Impact. Score:<\/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) causes one of the above to occur.<\/strong><\/span><\/p>\n

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

Consequences of Introduction to California for Indusiothrips seshadrii<\/em>: Low (8)<\/span><\/strong><\/h5>\n

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

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

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

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

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

\u2013Not established (0) Pest never detected in California, or known only from incursions.<\/strong><\/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: Low (8)<\/span><\/strong><\/p>\n

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

No reports were found indicating that I. seshadrii<\/em> has any economic or environmental impact, although this could simply reflect a lack of study of the biology of this species because it does not feed on economically-significant plants.\u00a0 It is possible that I. seshadrii<\/em> may not be capable of becoming established in California because it requires a tropical climate.<\/p>\n

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

Indusiothrips seshadrii<\/em> is a thrips that apparently feeds on ferns and is not known to be present in California.\u00a0 It poses a risk to the environment, including rare fern species, of which there are many in California.\u00a0 For these reasons, an \u201cA<\/strong>\u201d rating is justified.<\/p>\n

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

Kud\u00f4, I.\u00a0 1992.\u00a0 A new Malaysian thrips with notes on some species of Dendrothripoides<\/em> and Indusiothrips<\/em> (Thysanoptera, Thripidae).\u00a0 Insecta Matsumurana.\u00a0 47: 91-101.<\/p>\n

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

Priesner, H.\u00a0 1952.\u00a0 On some new genera and species of Thysanoptera from the Oriental region.\u00a0 Indian Journal of Entomology.\u00a0 13: 183-200.<\/p>\n

Symbiota Collections of Arthropods Network.\u00a0 Accessed 18 December 2017. http:\/\/scan1.acis.ufl.edu<\/a><\/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

4\/30\/18 \u2013 6\/14\/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 Indusiothrips seshadrii Priesner: thrips Thysanoptera: Thripidae Pest Rating: A \u00a0 PEST RATING PROFILE Initiating Event: A specimen of Indusiothrips seshadrii was recently found on Oahu Island, 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. History & … Continue reading Thrips | Indusiothrips seshadrii Priesner<\/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":[],"class_list":["post-5322","post","type-post","status-publish","format-standard","hentry","category-a-rated","category-entomology","category-thysanoptera"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-1nQ","jetpack-related-posts":[{"id":9805,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9805","url_meta":{"origin":5322,"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 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":5322,"position":4},"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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