Birch Leaf Roller

Birch Leaf Roller - Deporaus betulae

Description

This is an all-black weevil with punctate elytra, 3-5 mm. The males have swollen femora on the rear legs but not the females. The elytra are oblong-shaped. The rostrum is broad and widens towards the tip.

Similar Species

Caenorhinus mannerheimii has a head width (across the eyes) at least as wide as the pronotum.

Identification difficulty
ID checklist (your specimen should have all of these features)
  • all black, 3-5mm
  • upperside pubescent
  • head with a basal restriction ('neck')
  • rounded 'temples' behind the eyes
  • rostrum broad and widening towards the tip
  • head width across the eyes narrower than the pronotum width
  • elytral punctuation rows 8+9 merge at the apex
Recording advice

Unless identified by a recognised expert, good photos are required that show the key ID features. Also state the beetle's size in the comments box.

Habitat

Found mainly on Birch but can be found on other trees such as Alder and Hazel.

When to see it

Spring and summer.

Life History

The females cut most of the way through a leaf, producing an inverted cone, in which an egg is laid.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Additional images

All NatureSpot records