Elongated Bean Weevil

Lixus pulverulentus · Order: Coleoptera · Family: Curculionidae

Damages trees, gardens or crops. The elongated bean weevil damages stems of beans, asters and related garden plants.

Source: Wikipedia

Elongated Bean Weevil
Photo: Gianni Del Bufalo bygdb, CC BY

These weevils have a narrow, elongated body that is dusted yellow-brown and a smooth, conical pronotum. Adults are about 10.5 to 17.5 mm long and appear from April through June.

Source: Wikipedia

How to recognize it

They are long and narrow with a dust-colored (yellowish-brown) surface. The pronotum is cone-shaped and not noticeably granular.

Source: Wikipedia

Size

Adults measure roughly 10.5 to 17.5 mm in length.

Source: Wikipedia

What it eats

Larvae develop inside stems of plants in the mallow, aster and legume families.

Source: Wikipedia

Life cycle

Pupation occurs inside the same stems where the larvae feed.

Source: Wikipedia

When you see it

Adults emerge in April and are most commonly seen in May and June.

Source: Wikipedia

More photos

Elongated Bean Weevil photo 3
Photo: Dimitǎr Boevski, CC BY
Elongated Bean Weevil photo 4
Photo: Gianni Del Bufalo bygdb, CC BY
Elongated Bean Weevil photo 5
Photo: João Valença, CC BY-SA
Elongated Bean Weevil photo 6
Photo: unknown, CC0

Questions people ask

What plants do elongated bean weevils damage?

Their larvae feed inside stems of mallow, aster and legume plants, harming those crops.

Source: Wikipedia

When can I expect to see these weevils?

Adults appear in April and are most abundant during May and June.

Source: Wikipedia

How big are adult elongated bean weevils?

They range from about 10.5 to 17.5 mm long.

Source: Wikipedia

How can I recognize an elongated bean weevil?

Look for a narrow, elongated, yellow-brown body with a smooth, cone-shaped pronotum.

Source: Wikipedia

Same family (Curculionidae)

Green Immigrant Leaf WeevilGreen Immigrant Leaf WeevilPolydrusus formosusDamages trees, gardens or cropsBlack Vine WeevilBlack Vine WeevilOtiorhynchus sulcatusDamages trees, gardens or cropsNettle weevilNettle weevilPhyllobius pomaceusDamages trees, gardens or cropsAsian Oak WeevilAsian Oak WeevilCyrtepistomus castaneusDamages trees, gardens or cropsStrawberry Root WeevilStrawberry Root WeevilOtiorhynchus ovatusDamages trees, gardens or cropsCommon Leaf WeevilCommon Leaf WeevilPhyllobius pyriDamages trees, gardens or crops

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Lixus_pulverulentus

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

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