Contarinia coryli


The midge Contarinia coryli causes galls to form in the catkins of Hazel.

The galls contains white jumping midge larvae; the galls must be opened to confirm whether mites or gall midge larvae are present. 

Similar Species

Very similar galls on Hazel catkins are caused by a mite, Phyllocoptruta coryli.   The mites are very small and need high magnification under a microscope to see them

Identification difficulty

Gall Adult  

ID guidance

The gall-causing larvae must be found.

Recording advice

Galls must be opened and photographed to confirm presence of midge larvae.  


Anywhere that Hazel catkins are found.

When to see it

Galls may be seen at any time that catkins are present on Hazel.

UK Status

Probably widespread and fairly frequent, but not well recorded in Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map


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

UK Map

Species profile

Species group:
Craneflies, Gnats & Midges
Records on NatureSpot:
First record:
06/09/2014 (Semper, Alan)
Last record:
11/09/2023 (Barber, David)

Total records by month

% of records within its species group

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