{"id":5139,"date":"2018-04-10T10:50:52","date_gmt":"2018-04-10T17:50:52","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5139"},"modified":"2018-05-29T14:42:44","modified_gmt":"2018-05-29T21:42:44","slug":"a-burrowing-bug-rhytidoporus-indentatus","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=5139","title":{"rendered":"A Burrowing Bug | Rhytidoporus indentatus"},"content":{"rendered":"
California Pest Rating\u00a0 for<\/h5>\n
A Burrowing Bug | Rhytidoporus indentatus <\/em>Uhler<\/h5>\n
Hemiptera: Cydnidae<\/h5>\n
Pest Rating: C<\/h5>\n

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

\n

\n

PEST RATING PROFILE<\/h3>\n

Initiating Event:<\/h5>\n

Rhytidoporus indentatus <\/em>is currently Q-rated.\u00a0 A permanent pest rating proposal is required to support an official pest rating.<\/p>\n

History & Status:<\/h5>\n

Background:<\/u><\/strong> \u00a0Rhytidoporus indentatus<\/em> has an appearance typical of members of the family Cydnidae; it is small (3.8-5.8 mm in length), oval-shaped, dark, and shiny (Froeschner, 1954; Froeschner and Maldonado-Capriles, 1992).\u00a0 Very little information is available on the biology of this species.\u00a0 It has been found in caves in Cuba and Jamaica, and it was reported to feed on fruit and seeds in bat guano (Barroso and D\u00edaz, 2014; Peck, 1992). \u00a0It has also been intercepted on various root commodities, which suggests it may feed on roots as well (see below).\u00a0 The members of this family are referred to as \u201cburrowing bugs\u201d because most species live underground and feed on roots, but some live above ground and feed on fallen seeds or the exposed parts of plants.\u00a0 Few species in this family are recognized as economically significant pests.\u00a0 Among them are some species that damage cassava roots or peanuts (Bellotti et al., 1994; Chapin et al., 2006).\u00a0 Besides the direct damage to the roots, feeding by these insects can allow infection by pathogens, including fungi.<\/p>\n

Worldwide Distribution<\/u><\/strong>:<\/u><\/strong>\u00a0 Rhytidoporus indentatus <\/em>is known from Pacific islands (including Guam), the Greater Antilles (including Cuba), and the United States (southern Florida and Hawaii) (Bishop Museum, 2002; Froeschner, 1976; Lis and Zack, 2010).\u00a0 It was also apparently collected from Baja California, although additional evidence of this species occurring there was not found (Cervantes Peredo and Ramos Rivera, 2017).\u00a0 The Greater Antilles distribution is presumed to represent the native range of the species, and the Pacific island, Mexico, and United States records represent introductions (Froeschner, 1954).<\/p>\n

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

California Distribution: <\/u><\/strong>\u00a0Rhytidoporus indentatus <\/em>is not known to be present in California (Symbiota Collections of Arthropods Network).<\/p>\n

California Interceptions:<\/u><\/strong>\u00a0 Rhytidoporus indentatus <\/em>has been intercepted on ginger, sweet potatoes, taro, and turmeric from Hawaii (PDR # 926381, 926378, 1308357, 190P06060306, 190P06620121, and 190P06620007), in the soil of plants from Hawaii (PDR # 1239534), with cut flowers from Hawaii (PDR # 1040836, 1418527, 1418527, and 1396118), with palms from Florida (PDR # 1039799), and in miscellaneous shipments from Hawaii and Florida (PDR # 975978 and 1376006).<\/p>\n

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

Consequences of Introduction:<\/h5>\n

1) Climate\/Host Interaction:<\/strong> Except for the record from Baja California, Rhytidoporus indentatus<\/em> is apparently restricted to areas with a tropical or subtropical climate. The climate of California appears largely unsuitable, but it is possible that this species could become established in a limited portion of the state.\u00a0 Therefore, Rhytidoporus indentatus <\/em>receives a Low (1)<\/strong> <\/span>in this category.<\/p>\n

\u2013 Low (1) <\/strong>Not likely to establish in California; or likely to establish in very limited areas.<\/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>There is very little information available on the biology of Rhytidoporus indentatus<\/em>. If it is assumed that the interception records represent feeding on the associated commodities, this species may feed on roots and seeds of a broad range of food plants.\u00a0 Therefore, it receives a High (3)<\/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.<\/p>\n

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

3) Pest Dispersal Potential:<\/strong> Rhytidoporus indentatus <\/em>presumably flies, as it is sometimes collected at light (Froeschner, 1976).\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> Rhytidoporus indentatus<\/em> is found in the Caribbean, Florida, and Pacific islands.\u00a0 Yet, there are no reports of this species being an economic pest, even though it presumable occurs in agricultural situations, based on the fact that it has been intercepted on commodities.\u00a0 Therefore, it receives a Low (1)<\/span><\/strong> in this category.<\/p>\n

Economic Impact:<\/strong><\/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) <\/strong>causes 0 or 1 of these impacts.<\/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> Rhytidoporus indentatus<\/em> has been introduced to the United States (Florida and Hawaii) and other localities. Although this species presumably feeds on plants (possibly seeds and roots), there is no evidence that it can cause significant damage to plants.\u00a0 As explained above, this species is not expected to become an economic pest, so it is unlikely that its establishment in California would trigger treatment programs. Therefore, it receives a Low (1)<\/span> <\/strong>in this category.<\/p>\n

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

Environmental Impact:<\/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. 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.<\/p>\n

Environmental Impact Score:<\/strong>\u00a01<\/strong><\/span><\/p>\n

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

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

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

Consequences of Introduction to California for Rhytidoporus indentatus<\/em>: Low (8)<\/span><\/h5>\n

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

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

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

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

6) Post Entry Distribution and Survey Information:<\/strong> Rhytidoporus indentatus <\/em>is not known to be present in California. \u00a0It receives a Not established (0) 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:<\/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:<\/h5>\n

There is very little information on the biology of Rhytidoporus indentatus<\/em>.\u00a0 The absence of reports of it being a pest anywhere it has so far been introduced to suggests that there is a low pest potential in California as well.\u00a0 However, it is possible that R. indentatus<\/em> causes damage to roots underground but the damage is not recognized or not realized to be caused by this species.\u00a0 There is also uncertainty regarding potential for environmental damage, because this species would have access to native plants in California that it has not previously encountered.\u00a0 It could, for example, feed on seeds of a rare plant to the extent that populations of such a plant would be threatened.<\/p>\n

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

There is no evidence that Rhytidoporus indentatus<\/em> is a pest or has an environmental impact anywhere it is found.\u00a0 Although it is not possible to predict with certainty what impact it would have in California, it appears highly unlikely that this species would become a problem in this state if it became established here.\u00a0 For these reasons, a \u201cC<\/strong>\u201d rating is justified.<\/p>\n

\n
References:<\/h5>\n

Barroso, A.A. and R.B. D\u00edaz.\u00a0 2014.\u00a0 Estado de conservaci\u1f79n de Jimeneziella decui<\/em>, una especie cavern\u00edcola de Cuba (Opiliones: Laniatores).\u00a0 Revista Ib\u00e9rica de Aracnolog\u00eda.\u00a0 25: 43-57.<\/p>\n

Bellotti, A.C., Braun, A.R., Arias, B., Castillo, J.A., and Guerrero, J.M.\u00a0 1994.\u00a0 Origin and management of neotropical cassava arthropod pests.\u00a0 African Crop Science Journal.\u00a0 2: 407-417.<\/p>\n

Bishop Museum.\u00a0 2002.\u00a0 Hawaiian All-Species Checklist.\u00a0 Accessed March 27, 2018. http:\/\/hbs.bishopmuseum.org\/checklist\/query.asp<\/a><\/p>\n

Chapin, J.W., Sanders, T.H., Dean, L.O., Hendrix, K.W., and J.S. Thomas.\u00a0 2006.\u00a0 Effect of feeding by a burrower bug, Pangaeus bilineatus<\/em> (Say) (Heteroptera: Cydnidae), on peanut flavor and oil quality.\u00a0 Journal of Entomological Science.\u00a0 41(1): 33-39.<\/p>\n

Froeschner, R.C.\u00a0 1976.\u00a0 The burrowing bugs of Hawaii, with description of a new species (Hemiptera: Cydnidae).\u00a0 Proceedings of the Hawaiian Entomological Society.\u00a0 22(2): 229-236.<\/p>\n

Froeschner, R.C.\u00a0 1954.\u00a0 Monograph of the Cydnidae of the Western Hemisphere.\u00a0 Ph.D. dissertation, Iowa State College.\u00a0 552 pp.<\/p>\n

Froeschner, R.C. and Maldonado-Capriles, J.\u00a0 1992.\u00a0 A synopsis of burrowing bugs of Puerto Rico with description of new species Melanaethus wolcotti<\/em> (Heteroptera: Cydnidae).\u00a0 Journal of Agriculture of the University of Puerto Rico.\u00a0 76: 177-185.<\/p>\n

Lis, J.A. and R.S. Zack.\u00a0 2010.\u00a0 A review of burrower bugs (Hemiptera: Heteroptera: Cydnidae sensu lato<\/em>) of Guam.\u00a0 Zootaxa.\u00a0 2523: 57-64.<\/p>\n

Peck, S.B.\u00a0 1992.\u00a0 A synopsis of the invertebrate cave fauna of Jamaica.\u00a0 National Speleological Society Bulletin.\u00a0 54: 37-60.<\/p>\n

Symbiota Collections of Arthropods Network (SCAN).\u00a0 Accessed March 28, 2017. http:\/\/symbiota4.acis.ufl.edu<\/a><\/p>\n

\n
Author:<\/h5>\n

Kyle Beucke, 1220 N Street, Room 221, Sacramento, CA, 95814, 916-403-6741,\u00a0plant.health[@]cdfa.ca.gov<\/p>\n

\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\/10\/18 \u2013 5\/25\/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: C<\/h3>\n
\n

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

California Pest Rating\u00a0 for A Burrowing Bug | Rhytidoporus indentatus Uhler Hemiptera: Cydnidae Pest Rating: C \u00a0 PEST RATING PROFILE Initiating Event: Rhytidoporus indentatus is currently Q-rated.\u00a0 A permanent pest rating proposal is required to support an official pest rating. History & Status: Background: \u00a0Rhytidoporus indentatus has an appearance typical of members of the family … Continue reading A Burrowing Bug | Rhytidoporus indentatus<\/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":[671,18,5],"tags":[],"class_list":["post-5139","post","type-post","status-publish","format-standard","hentry","category-c-rated","category-hemiptera","category-entomology"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-1kT","jetpack-related-posts":[{"id":6132,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=6132","url_meta":{"origin":5139,"position":0},"title":"Cotton Seed Bug | Oxycarenus hyalinipennis (Costa)","author":"Kyle Beucke","date":"June 4, 2019","format":false,"excerpt":"California Pest Rating Profile for Oxycarenus hyalinipennis (Costa): Cotton Seed BugHemiptera: Oxycarenidae Pest Rating A DOWNLOAD PEST RATING profile Author\/Responsible Party: Kyle Beucke, 2800 Gateway Oaks Dr, Sacramento, CA, 95833, 916-403-6741, plant.health[@]cdfa.ca.gov Updated by ls","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":12687,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=12687","url_meta":{"origin":5139,"position":1},"title":"Brachynotocoris puncticornis Reuter: a bug","author":"Kyle Beucke","date":"June 4, 2024","format":false,"excerpt":"California Pest Rating Profile for Brachynotocoris puncticornis Reuter: a bugPest Rating: C 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 tn","rel":"","context":"In "C-Rated"","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14526,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=14526","url_meta":{"origin":5139,"position":2},"title":"Arocatus melanocephalus (Fabricius): elm seed bug","author":"Kyle Beucke","date":"April 15, 2026","format":false,"excerpt":"California Pest Rating Proposal for Arocatus melanocephalus (Fabricius): elm seed bug Current Pest Rating: Q Proposed Pest Rating: C Comment Period:\u00a004\/15\/2026 through 05\/30\/2026 Download Pest Rating Proposal *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation,\u2026","rel":"","context":"In "C-Rated"","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14457,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=14457","url_meta":{"origin":5139,"position":3},"title":"Centrocoris volxemi (Puton): leaf-footed bug","author":"Kyle Beucke","date":"March 5, 2026","format":false,"excerpt":"California Pest Rating Profile for Centrocoris volxemi (Puton): leaf-footed bug \u00a0Pest Rating: C Comment Period:\u00a003\/05\/2026 \u2013 04\/19\/2026 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\u2026","rel":"","context":"In "C-Rated"","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9636,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9636","url_meta":{"origin":5139,"position":4},"title":"Remaudiereana nigriceps (Dallas): a bug","author":"Kyle Beucke","date":"February 25, 2022","format":false,"excerpt":"California Pest Rating for Remaudiereana nigriceps (Dallas): a bugPest 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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