Hemerocallis Gall Midge - Contarinia quinquenotata
The larvae of the Hemerocallis Gall Midge (Contarinia quinquenotata) are serious pests of Daylilies (Hemerocallis sp.). It infests the flower buds causing the flowers to remain closed and rot. There are many white larva inside between the thickened and distorted petals.
https://www.rhs.org.uk/biodiversity/hemerocallis-gall-midge
Gall 
Adult 
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In gardens and parks, where the host species of Daylily occur.
When Daylilies are in bloom.
Widespread in Britain, though less frequent in Scotland.
The Royal Horticultural Society is tracking its spread through the UK, and have asked for records to be submitted via their hemerocallis gall midge survey
Appears to be frequent in Leicestershire and Rutland (which are mainly from records on the NBN from the RHS survey)
sue
Bagworth
11 June 2018
galls on day-lily
sue
Bagworth
11 June 2018
section through gall in day-lily bud
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Species profile
- Common names
- Hemerocallis Gall Midge
- Species group:
- insect - true fly (Diptera)
- Kingdom:
- Animalia
- Order:
- Diptera
- Family:
- Cecidomyiidae
- Records on NatureSpot:
- 1
- First record:
- 11/06/2018 (Timms, Sue)
- Last record:
- 11/06/2018 (Timms, Sue)
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% of records within its species group
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