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  • 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)
  • 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)
  • Bruchidius villosus is a species of bean weevil known by the common names broom seed beetle and Scotch broom bruchid. (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)
  • pest
  • 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)
  • Mango seed weevil is considered a pest on mangoes. (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 can also be manually removed from plants at night when they can be found feeding on leaf edges. (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)
  • foliage
  • The adult beetles feed on the foliage of many herbaceous plants and shrubs, especially Rhododendron , evergreen Euonymus , Hydrangea , Epimedium, Bergenia , Primula and strawberry . (rhs.org.uk)
  • If seen, use a flashlight to examine the foliage at night for the adult beetles. (gov.mb.ca)
  • If notching is observed, return at night with a flashlight to examine the foliage for adult beetles. (gov.mb.ca)
  • While these weevils do harm foliage they shouldn't affect the overall health and longevity of established trees. (wikipedia.org)
  • the adult feeds on the foliage but does less drastic damage to the plant. (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
  • Adult weevils can be expected to feed on the remaining forage in alfalfa fields, thereby decreasing not only the quantity but the quality of the plants. (plantmanagementnetwork.org)
  • 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)
  • soil surface
  • Adults (click beetles) are dark brown, about 1/4 inch long and are found near the soil surface under leaves and trash in sweet potato plantings. (clemson.edu)
  • 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)
  • grubs
  • 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)
  • damage
  • Adults rarely cause enough damage to affect the vigour of plants. (rhs.org.uk)
  • The adult weevil does not do terminal damage to a plant. (garden.org)
  • 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)
  • On a good note, weevils usually don't usually kill the entire tree, though they will cause damage to one- and two-year old wood. (garden.org)
  • 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)
  • Since adults do not fly, plants bordering older plantings show damage the first season, with damage spreading each year the planting is kept. (wikipedia.org)
  • Hadramphus spinipennis coxella weevil: a manual with aids to identification and descriptions of plant damage. (wikipedia.org)
  • The adult feeds on flowers and pollen but probably does little damage to the plant. (wikipedia.org)
  • bark
  • Look for overwintering weevils under bark of trees near fields. (rinconvitova.com)
  • 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)
  • bean
  • The bean weevils or seed beetles are a subfamily (Bruchinae) of beetles, now placed in the family Chrysomelidae, though they have historically been treated as a separate family. (wikipedia.org)
  • Bean weevils are generally compact and oval in shape, with small heads somewhat bent under. (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)
  • Trap
  • @midnight21 , good timing for that tip about the hose pipe as a weevil hiding place/trap. (garden.org)
  • tendency
  • The name is from the Latin (angarius- mounted courier) after the tendency to ride weevils. (wikipedia.org)
  • The large pine weevils have a tendency to attack artificially fertilized trees, especially those fertilized with phosphorus which causes greater nutritional quality of phloem for the weevils or make faster more attractive plants for the weevils due to faster growing. (wikipedia.org)
  • 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)
  • large
  • Thus, in the years following the clearing of plots and planting of new seedlings, adults that hatch in large numbers may cause a plague. (wikipedia.org)
  • Hadramphus spinipennis, commonly called the coxella weevil, is a large, nocturnal, flightless weevil only found on Mangere and Rangatira Islands in the Chatham Islands, New Zealand. (wikipedia.org)
  • It is the only large weevil on the Chatham Islands. (wikipedia.org)