Fauna
Insect · GBIF taxon 1210765

White-fringed Weevil

Naupactus leucoloma

Also known as White-fringed Beetle, White Fringed Weevil

White-fringed weevils are stout, grayish-brown beetles easily recognized by the broad white stripe running along each side of their body. Native to South America, they have spread globally as agricultural pests whose soil-dwelling larvae voraciously feed on roots, tubers, and field crops. Nearly all adult individuals are flightless females that reproduce via parthenogenesis, allowing even a single beetle to establish a local infestation.

Agricultural PestFlightlessParthenogenetic
White-fringed Weevil reference1 / 7
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—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & prey
  • Peanuts
  • Soybeans
  • Potatoes
Predators
  • Ground beetles
  • Birds
  • Predatory nematodes
ThreatsAgricultural pesticides, soil tillage, and crop rotation
HabitatsAgricultural fields, pastures, gardens, and disturbed grasslands
Life span1 to 2 years
Classification
  1. OrderColeoptera
  2. FamilyCurculionidae
  3. GenusNaupactus
  4. SpeciesNaupactus leucoloma
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
Responsible observation
  • Look for Foliage Damage: Check crop and weed leaves for distinctive notched edges created by feeding adults.
  • Examine the Sides: Observe the lateral pale white stripe running along the dark grayish body.
  • Inspect Soil Roots: Dig carefully near stunted plants to spot white, C-shaped larvae underground.
Related species
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