Dasineura thomasiana


The larvae of the gall midge Dasineura thomasiana cause galls on various species of Lime. Young terminal leaves are rolled and distorted, the veins thickened. The larvae are initially white, becoming orange-red when mature. 

Identification difficulty

Adult Gall

Recording advice

Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.  

Gall:  Please supply a photograph of the galled leaves with your record and state the host species.


Galls may be found wherever Lime species occur.

When to see it

Galls may be recorded whenever Lime species are in leaf.

Life History

Pupation occurs in the soil.

UK Status

Status in Britain is difficult to determine due to lack of records.

VC55 Status

Status in Leicestershire and Rutland not known.

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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