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- Q1634537 subject Q14952166.
- Q1634537 subject Q21749041.
- Q1634537 subject Q6208850.
- Q1634537 subject Q8295225.
- Q1634537 abstract "Longitarsus jacobaeae is a species of flea beetle known as the tansy ragwort flea beetle. It is used as an agent of biological pest control against the noxious weed known as ragwort (Senecio jacobaea).The adult beetle is light golden brown in color and between 2 millimetres (0.079 in) and 4 millimetres (0.16 in) long. The female is larger than the male, especially when gravid. The beetle has enlarged femurs for its main locomotion method of hopping. The female lays eggs on or near the ragwort, its host plant. The larva emerges in about two weeks and burrows into the ground to feed on the roots. The larvae and adults are dually responsible for damage to the plant. The adult defoliates plants which are often already weakened by larval damage at the roots. This two-pronged attack is quite successful in preventing ragwort growth and development. The beetles have prevented entire populations of ragwort from reaching flowering stage at several monitored sites.The beetle is not choosy between species in the genera in which it feeds from, and recent studies with the beetle have shown "that selection pressure by specialist herbivores is not likely a driving force in evolutionary diversification" of the plants which contain the alkaloids that the beetle dines on.This beetle is native to Eurasia. It was first introduced to the United States as a ragwort biocontrol agent in 1969 and it is now established in much of the western United States.The beetle is most effective when used in conjunction with the cinnabar moth (Tyria jacobaeae), another ragwort biocontrol agent. The beetle is not known to attack other plants. A close relative, Longitarsus ganglbaueri, which also feeds on ragwort, does attack other plant species; it is not used as a biocontrol agent for this reason.".
- Q1634537 binomialAuthority Q528545.
- Q1634537 class Q1390.
- Q1634537 family Q1303239.
- Q1634537 family Q193407.
- Q1634537 genus Q2069042.
- Q1634537 kingdom Q729.
- Q1634537 order Q22671.
- Q1634537 phylum Q1360.
- Q1634537 thumbnail Longitarsus_jacobaeae.jpg?width=300.
- Q1634537 wikiPageExternalLink Longitarsus-jacobaeae.html.
- Q1634537 wikiPageExternalLink ?page=1.
- Q1634537 wikiPageWikiLink Q1144724.
- Q1634537 wikiPageWikiLink Q116890.
- Q1634537 wikiPageWikiLink Q129270.
- Q1634537 wikiPageWikiLink Q1303239.
- Q1634537 wikiPageWikiLink Q1360.
- Q1634537 wikiPageWikiLink Q1390.
- Q1634537 wikiPageWikiLink Q14952166.
- Q1634537 wikiPageWikiLink Q1634201.
- Q1634537 wikiPageWikiLink Q193407.
- Q1634537 wikiPageWikiLink Q2069042.
- Q1634537 wikiPageWikiLink Q21749041.
- Q1634537 wikiPageWikiLink Q22671.
- Q1634537 wikiPageWikiLink Q25661.
- Q1634537 wikiPageWikiLink Q3133438.
- Q1634537 wikiPageWikiLink Q373530.
- Q1634537 wikiPageWikiLink Q528545.
- Q1634537 wikiPageWikiLink Q6208850.
- Q1634537 wikiPageWikiLink Q7067310.
- Q1634537 wikiPageWikiLink Q729.
- Q1634537 wikiPageWikiLink Q769234.
- Q1634537 wikiPageWikiLink Q8295225.
- Q1634537 binomialAuthority "Waterhouse, 1858".
- Q1634537 classis "Insecta".
- Q1634537 familia Q193407.
- Q1634537 genus "Longitarsus".
- Q1634537 ordo Q22671.
- Q1634537 phylum "Arthropoda".
- Q1634537 regnum "Animalia".
- Q1634537 subfamilia Q1303239.
- Q1634537 type Animal.
- Q1634537 type Eukaryote.
- Q1634537 type Insect.
- Q1634537 type Species.
- Q1634537 type Thing.
- Q1634537 type Q1390.
- Q1634537 type Q19088.
- Q1634537 type Q729.
- Q1634537 comment "Longitarsus jacobaeae is a species of flea beetle known as the tansy ragwort flea beetle. It is used as an agent of biological pest control against the noxious weed known as ragwort (Senecio jacobaea).The adult beetle is light golden brown in color and between 2 millimetres (0.079 in) and 4 millimetres (0.16 in) long. The female is larger than the male, especially when gravid. The beetle has enlarged femurs for its main locomotion method of hopping.".
- Q1634537 label "Tansy ragwort flea beetle".
- Q1634537 depiction Longitarsus_jacobaeae.jpg.