Dogwood Rivet Midge - Craneiobia corni
The larvae of the midge Craneiobia corni cause galls on the leaves of Dogwood (Cornus sanguinea) and possibly on other Cornus species. The galls are flask shaped and obvious on both sides of the leaf, they are domed above, 3 to 5 mm across protruding below from midrib or side vein 8 to 10 mm, often several on a leaf. The galls are greenish yellow, often tinged pink or purple.
Wherever Dogwood occurs.
July to September.
Not well recorded but thought to be locally frequent in Britain.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015