• beetle
  • Vine weevil is a beetle that attacks a wide range of plants, both indoors and outdoors, but is especially damaging to plants grown in containers . (rhs.org.uk)
  • The Japanese beetle adults feed on the leaves during June and July. (clemson.edu)
  • Bruchidius villosus is a species of bean weevil known by the common names broom seed beetle and Scotch broom bruchid. (wikipedia.org)
  • Of these 12, 10 have become established, and 4 are widely established (Urophora affinis and Urophora quadrifasciata, the root boring beetle, Sphenoptera jugoslavica, and the weevil Larinus minutus). (wikipedia.org)
  • The boll weevil (Anthonomus grandis) is a beetle which feeds on cotton buds and flowers. (wikipedia.org)
  • Boll weevils begin to die at temperatures at or below −5 °C (23 °F). Research at the University of Missouri indicates they cannot survive more than an hour at −15 °C (5 °F). The insulation offered by leaf litter, crop residues, and snow may enable the beetle to survive when air temperatures drop to these levels. (wikipedia.org)
  • The length of the adult beetle ranges from 21-22 mm (females can reach 25 mm) excluding the rostrum, and its width is 10 mm. (wikipedia.org)
  • pests
  • Many growers elected to control these pests early and hoped that alfalfa weevils would be simultaneously managed. (plantmanagementnetwork.org)
  • This weevil spread from Sri Lanka into India and then Pakistan where many subspecies of Myllocerus undecimpustulatus Faust are considered pests of more than 20 crops. (ufl.edu)
  • pest
  • Myllocerus undecimpustulatus undatus Marshall, the Sri Lankan weevil, is a plant pest with a wide range of hosts. (ufl.edu)
  • Mango seed weevil is considered a pest on mangoes. (wikipedia.org)
  • In the 1980s, entomologists at Texas A&M University pointed to the spread of another invasive pest, the red imported fire ant, as a factor in the weevils' population decline in some areas. (wikipedia.org)
  • leaf
  • It is also known as the sassafras mining weevil, tuliptree leafminer, tulip tree weevil, or the magnolia leaf miner. (wikipedia.org)
  • Adults pass the winter months in surrounding leaf litter and become active throughout late April and early May. (wikipedia.org)
  • Adults make a characteristic oval feeding notch on the leaf petiole, sometimes scraping away the leaf to encourage to production of gum. (wikipedia.org)
  • 1978
  • Since 1978, the Boll Weevil Eradication Program in the U.S. allowed full-scale cultivation to resume in many regions. (wikipedia.org)
  • 1994, cited orig ed 1977) Strawberry Root Weevil: Species Account, Talk About Wildlife Insects and diseases of Canada's forests: Strawberry root weevil, Natural Resources Canada Emenegger, D. B. & Berry R. E. 1978. (wikipedia.org)
  • parasitic
  • Other avenues of control that have been explored include weevil-resistant strains of cotton, the parasitic wasp Catolaccus grandis, the fungus Beauveria bassiana, and the Chilo iridescent virus. (wikipedia.org)
  • alfalfa
  • A sampling of Oklahoma alfalfa fields indicates that growers who made a single, thorough application 20 gallons per acre or more at slower speeds earlier this year may have saved an application or two, but their alfalfa took a serious hit from heavy weevil and aphid feeding. (plantmanagementnetwork.org)
  • pupate
  • They pupate in the upper layers of soil in the spring and change into adults later in the spring or in summer, joining the adults of the previous summer to feed on leaves and fruit. (wikipedia.org)
  • Severe
  • To get maturation, adults feed on the bark and phloem of seedlings and young conifers, but sometimes also deciduous trees, causing severe growth loss, stem deformities sand increased mortality. (wikipedia.org)
  • quadrifasciata
  • In spotted and diffuse knapweed, L. minutus directly consumes another biological control agent released to control the species, the gall-forming flies Urophora affinis Frfld and Urophora quadrifasciata Meigen (Diptera: Tephrididae) This weevil is native to southern Europe and the Mediterranean. (wikipedia.org)
  • roots
  • The adult weevils eat plant leaves during spring and summer, but it is the grubs that cause the most damage over autumn and winter when they feed on plant roots. (rhs.org.uk)
  • invasive
  • Bagous affinis Hustache ( Figure 1 ) is a semi-aquatic weevil that feeds on the aquatic invasive plant Hydrilla verticillata (L.f. (ufl.edu)
  • Early experimental successes occurred in parts of Africa and southeast Asia, and the weevil is now established in the southeastern United States and parts of Australia, along with the moth S. multiplicalis, as biological control for invasive water weeds. (wikipedia.org)
  • insecticide
  • As soon as you find adults or egg-laying scars, apply the first insecticide, then spray again 2 weeks later. (garden.org)
  • Although it was possible to control the boll weevil, to do so was costly in terms of insecticide costs. (wikipedia.org)
  • biological control
  • The weevil was discovered during surveys for biological control agents for hydrilla in Pakistan in 1980 and was first introduced to the U.S. in Florida from India in 1987. (ufl.edu)
  • damage
  • To minimize root weevil damage in strawberry fields, fall ploughing will help protect the spring planting. (gov.mb.ca)
  • Adult weevil feeding damage scores were higher on Poa colensoi and Festuca novae-zelandiae than Chionochloa rigida . (frontiersin.org)
  • Adult Sri Lankan weevil, Myllocerus undecimpustulatus undatus Marshall, feeding damage on Conocarpus erectus L., green buttonwood. (ufl.edu)
  • The adult weevils cause damage by eating the bark of seedlings around the 'collar' of the stem, thus 'ring-barking' the tree seedling which usually results in its demise. (wikipedia.org)
  • The main damage is caused by the adults that feed on the bark and the cambium. (wikipedia.org)
  • Both larva and adult of this species contribute to the damage done to the plant. (wikipedia.org)
  • Adults feed on the leaves but it is the larva that does the most damage to the plant. (wikipedia.org)
  • Hadramphus spinipennis coxella weevil: a manual with aids to identification and descriptions of plant damage. (wikipedia.org)
  • 1994
  • One day before eclosion, adult features become apparent, the eyes and leg joints darken, and the tips of the mandibles turn red (Buckingham and Bennett 1994). (ufl.edu)
  • Adults are on average 3.5 mm long and 1.5 mm wide (Buckingham and Bennett 1994). (ufl.edu)
  • When underwater, the weevils breathe using plastron respiration, i.e., air that is trapped close to the body by scales (Buckingham and Bennett 1994). (ufl.edu)
  • spots
  • One should apply contact or stomach insecticides as soon as the first adult feeding spots are noticed on host leaves. (wikipedia.org)
  • Large pine weevils can locate spots on the ground to dig into in a great precision using olfactory cues. (wikipedia.org)
  • affinis
  • Adults of the hydrilla tuber weevil, Bagous affinis on a tuber of Hydrilla verticillata . (ufl.edu)
  • Bagous affinis adults cannot swim, but they can remain submerged for several hours. (ufl.edu)
  • leaves
  • Injury from the adult weevils feeding on leaves and fruit is relatively unimportant except as an indicator of weevil presence. (gov.mb.ca)
  • Fields should be monitored in July or August for notching in the edges of leaves, which is caused by adult feeding. (gov.mb.ca)
  • The new adults then continue on their journey to eat yet more leaves until mid or late July. (wikipedia.org)
  • It uses the scraps to build a chamber in which it pupates for one to two weeks and then leaves the flower head as an adult. (wikipedia.org)
  • fruit
  • The Sri Lankan weevil has a wide host range of over 150 plant species including native, ornamental, vegetable and fruit species. (ufl.edu)
  • Due to its feeding habits, the Sri Lankan weevil could negatively affect subtropical and tropical fruit, ornamental, and vegetable industries here in Florida. (ufl.edu)
  • The adults are not strong fliers and are not found far from fallen fruit. (wikipedia.org)