Putoniella pruni
The larva of the gall midge Putoniella pruni causes a gall on Blackthorn and other Prunus species. The galls ca be found in 2 types: as a swelling on the midrib underneath, often reddish, with a slit-like opening above; or a hard, upward-rolled, pod-like leaf margin. The larvae are orange.
Gall 
Adult 
Look for it in places with a lot of Blackthorn.
Adult in April and May but the gall is more likely to be seen than the adult midge.
Uncommon to rare - only two sites in Britain previously listed, one in Surrey and one in the west.
First record for VC55 (Leicestershire and Rutland).
 on Blackthorn (Prunus spinosa) M69 Motorway Island Sapcote SP 4635 9382 (taken 4.6.2010)_gall.JPG)
Graham Calow
M69 Island, Sapcote
04 June 2010
gall on Blackthorn - 1st VC55 record
Graham Calow
M69 Island, Sapcote
25 May 2011
on Blackthorn
sue
Bagworth, Community Centre
20 September 2019
hard leaf roll on a Prunus - an alternative form of the gall
Graham Calow
Sapcote
05 May 2014
sue
Bagworth, Community Centre
20 September 2019
Graham Calow
M69 Island, Sapcote
06 June 2014
gall on Blackthorn
Graham Calow
Sapcote
05 May 2014 on Blackthorn (Prunus spinosa) M69 Motorway Island Sapcote SP 4635 9382 (taken 4.6.2010),_gall.JPG)
Graham Calow
M69 Island, Sapcote
04 June 2010
gall on Blackthorn - 1st VC55 record
 on Blackthorn (Prunus spinosa) M69 Motorway Island Sapcote SP 4635 9382 (taken 4.6.2010)_gall.JPG)
 on Blackthorn (Prunus spinosa) M69 Motorway Island Sapcote SP 4635 9382 (taken 4.6.2010),_gall.JPG)
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Species profile
- Species group:
- insect - true fly (Diptera)
- Kingdom:
- Animalia
- Order:
- Diptera
- Family:
- Cecidomyiidae
- Records on NatureSpot:
- 5
- First record:
- 04/06/2010 (Calow, Graham)
- Last record:
- 20/09/2019 (Timms, Sue)
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