• genus
  • The genus can be diagnosed among wingless cryptorhynchine weevils by the absence of a metanepisternum and by a synapomorphic structure of the tarsus with minute claws and a deeply incavated articulation of tarsomere 4. (wikipedia.org)
  • insect
  • A phylogeographic approach was conducted to assess the geographic structure and genetic variation in populations of the boll weevil Anthonomus grandis , which is the most harmful insect pest of cotton in the Americas. (springer.com)
  • To account for these correlations, I have proposed the niche explosion hypothesis, postulating a positive feedback loop between host range and population size that resulted in extreme polyphagy and abundance in several insect groups having flightless females, including scale insects, broad-nosed weevils, and several families of moths. (umass.edu)
  • I believe it kills weevils through disrupting the nervous system of the insect. (blogspot.com)
  • widespread
  • Introduced from Europe, the black vine weevil ( Otiorhynchus sulcatus ) is a widespread pest in the northern half of the United States, where it attacks a wide variety of landscape shrubs, especially evergreens such as rhododendrons, hemlocks, and yews. (hortmag.com)
  • damage
  • Adult weevil feeding damage scores were higher on Poa colensoi and Festuca novae-zelandiae than Chionochloa rigida . (frontiersin.org)
  • control
  • Beneficial nematodes ( Heterorhabditis bactenophora -marketed as Cruiser, Heteromask, and Gardens Alive Grub-Away Nematodes) have been successfully used to control weevils in container nursery operations, though less reliably in landscape situations. (hortmag.com)
  • CONTROL & ERADICATION: According to a number of garden bloggers, garden websites, and public garden websites, the only certain control for this weevil is a product shown below. (blogspot.com)
  • additional
  • It is surmised that the development of this feature provided additional flexibility which permitted weevils to improve their climbing abilities, helped them keep steady when at rest, and to give a stronger leverage for piercing by the snout. (wikipedia.org)
  • years
  • It has been estimated that weevils evolved this system about 100 million years ago. (wikipedia.org)
  • In contrast, Emily thinks that knobbled weevils are easiest to catch in years of poor flowering. (blogspot.fr)
  • The previous two summers were good flowering years so the weevils are thought to not have needed to move around so much. (blogspot.fr)
  • food
  • Emily proposes that this caused a weevil mass movement, interplant dispersal, to locate more food resources that resulted in a very successful pitfall trap count. (blogspot.fr)
  • island
  • In 2004 the rodent-free island had 80 flax weevils translocated there from Te Pākeka/Maud Island in the Marlborough Sounds. (livenews.co.nz)