Cabbage Seed Weevil - Ceutorhynchus obstrictus


Adults have round grey bodies (2 to 4 mm in length) and grey legs covered with fine white scales. Ceutorhynchus obstrictus has a long curved proboscis with small bent antennae. When disturbed, it displays the interesting behaviour of folding its legs and proboscis against its body to make it look like a small grey pebble.

Identification difficulty

Around brassica plants.

When to see it

Spring and summer.

Life History

The eggs are deposited into immature crucifer (Brassica sp.) pods. Larvae feed on developing seeds. The mature larvae bore out the side of the pod and burrow into the soil. Adults emerge 10-14 days after pupation begins and feed for the remainder of the season on pods and flowers storing fats for overwintering.

UK Status

Fairly frequent and widespread in England and Wales.

VC55 Status

Fairly common in Leicestershire and Rutland. There were a total of 88 VC55 records for this species up to March 2015.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map