agronom.info agronomy portal
Reference · Pests

Weevils

Weevils (family Curculionidae) represent one of the largest families of beetles in the order Coleoptera. These insects are easily recognized by their distinctively elongated snouts, known as rostra, which they use to bore into plant tissues for feeding and laying eggs.

1 620 items

What the section contains

Diorymerellus Diorymerellus Doliopygus Doliopygus Doliopygus brevis Doliopygus brevis Dolurgus Dolurgus Double-spined bark beetle Ips duplicatus Douglas fir pole beetle Pseudohylesinus nebulosus Douglas fir twig weevil Cylindrocopturus furnissi Douglas-fir beetle Dendroctonus pseudotsugae Dryocoetes Dryocoetes Dryocoetiops Dryocoetiops Dryoxylon Dryoxylon Dryoxylon onoharaense Dryoxylon onoharaense Dyslobus Dyslobus Dyslobus lecontei Dyslobus lecontei East Asian bark beetle Heteroborips seriatus Eastern ambrosia beetle Euwallacea interjectus Eastern bark beetle Pseudips concinnus Eastern bark beetle Pseudips orientalis Eastern five-spined engraver Ips grandicollis Eastern larch beetle Dendroctonus simplex Eaton's weevil Cylindrocopturus eatoni Eccoptopterus Eccoptopterus Egyptian alfalfa weevil Hypera brunneipennis Eidophelus Eidophelus Eidophelus jalappae Eidophelus jalappae Eight-toothed wood-boring beetle Xyleborinus octiesdentatus Elegent weevil Conotrachelus elegans Elephant beetle Orthorhinus cylindrirostris Ellimenistes Ellimenistes laesicollis Ellimenistes Ellimenistes Elm bark beetle Magdalis barbita Elm bark beetle Pteleobius Elm bark beetle Pteleobius vittatus Elm bark beetle Scolytus ensifer Elm bark beetle Scolytus laevis Elm bark beetle Scolytus muticus Elm bark beetle Scolytus praeceps Elm bark beetle Scolytus subscaber Elm bark beetle Scolytus sulcifrons Elm bark beetle Xyleborus celsus Elm bark weevil Magdalis armicollis Elm leaf miner Rhynchaenus excellens Elm weevil Magdalis armigera Elm weevil Magdalis frontalis Elytroteinus Elytroteinus Emarginate bark beetle Ips emarginatus Epicaerus Epicaerus operculatus Epicaerus Epicaerus Epicaerus aurifer weevil Epicaerus aurifer Epicaerus cognatus Epicaerus cognatus Eremnus Eremnus Eremnus atratus Eremnus atratus Eremnus setulosus Eremnus setulosus Ernoporus Ernoporus Eubulus weevil Eubulus Eucalyptus shot-hole borer Microperus eucalypticus Eucalyptus snout beetle Gonipterus Eucalyptus snout beetle Gonipterus gibberus Eucalyptus snout beetle Gonipterus balteatus Eucalyptus snout beetle Gonipterus pulverulentus
Marketplace

Products in this section · 12

Весь каталог

Weevils

The damage caused by weevils varies significantly between species. Adults typically feed on leaves, buds, and flowers, often leaving characteristic notches along leaf margins. The larvae are often the most destructive stage, living inside roots, stems, seeds, or fruit, causing internal damage that leads to weakened plant structures or total loss of harvest.

The life cycle of a weevil includes four distinct stages: egg, larva, pupa, and adult. Most weevil species overwinter as adults in protected locations such as soil debris, leaf litter, or under tree bark. Once temperatures rise in the spring, they emerge, feed, and begin the reproductive cycle, with females depositing eggs into the plant tissues they have prepared.

Economically significant species include the granary weevil, which destroys stored grain, and the cotton boll weevil, known for devastating cotton crops. These pests have high reproductive rates and are highly adaptable, which makes them a constant threat to both field crops and horticultural plants worldwide.

  • Crop rotation to break the pest's life cycle.
  • Mechanical control methods, such as deep plowing to expose larvae and pupae.
  • Use of systemic insecticides when economic thresholds are reached.
  • Maintaining field hygiene by removing crop residues and weeds.
  • Biological control using predators or entomopathogenic fungi.