Tychius quinquepunctatus (Linnaeus, 1758)

on Lathyrus, Pisum, Vicia

Tychius quinquepunctatus: galled pod of Vicia hirsuta

Vicia hirsuta, België, prov. Antwerpen, Mol, Heidenhuizen © Carina Van Steenwinkel; see notes below

Tychius quinquepunctatus: larve in opened hall

larva in opened gall

Tychius quinquepunctatus

damage to the pod

gall

up to 10 larve feed within the pod on the developing seeds; this may cause some galling of the pods. Pupation in the soil.

host plants

Fabaceae, oligophagous

Lathyrus latifolius, linifolius, pratensis, sylvestris, vernus; Pisum sativum; Vicia cracca, dumetorum, faba, sativa, sepium, tenuifolia.

larvae and pupae

detailed description in Skuhrovec, Gosik & Caldara.

notes

only in the lowest of the three pods in the pictures above a Tychius was found. This seems to indicate that the weevil larva does not play an important role in the galling of the pods.

references

Behne (1987a), Dieckmann (1988a), Rheinheimer & Hassler (2010a), Skuhrovec, Gosik & Caldara (2014a)/

mod 21.v.2019