Hemerocallis Gall Midge - Contarinia quinquenotata

Description

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

 

Identification difficulty

Gall Adult

Recording advice

Provide a photo

Habitat

In gardens and parks, where the host species of Daylily occur.

When to see it

When Daylilies are in bloom.

UK Status

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 

VC55 Status

Appears to be frequent in Leicestershire and Rutland (which are mainly from records on the NBN from the RHS survey)

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species profile

Common names
Hemerocallis Gall Midge
Species group:
Craneflies, Gnats & Midges
Kingdom:
Animalia
Order:
Diptera
Family:
Cecidomyiidae
Records on NatureSpot:
1
First record:
11/06/2018 (Timms, Sue)
Last record:
11/06/2018 (Timms, Sue)

Total records by month

% of records within its species group

10km squares with records

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