RHS Hemerocallis midge survey
Citation
Royal Horticultural Society (2022). RHS Hemerocallis midge survey. Occurrence dataset https://doi.org/10.15468/gt2j0y accessed via GBIF.org on 2025-06-22.Description
The data set consists of records for Hemerocallis gall midge (Contarinia quinquenotata) for Britain and Ireland gathered by the Royal Horticultural Society, from members of the Society and the general public. https://www.rhs.org.uk/advice/profile?pid=742 Data are from 1989 onwards when the Hemerocallis gall midge was first reported as established in the UK. From 1989 to May 2008 all records are via RHS Advisory Service. A majority of records post May 2008 are via the web based form.
Purpose
Data have been collected as part of the surveying work of the Royal Horticultural Society to establish the distribution and spread of the Hemerocallis gall midge, an invasive garden pest of daylilies (Hemerocallis species and cultivars) , which became established in the UK in the late 1980s.
Sampling Description
Quality Control
Data quality is good, but coverage pre May 2008 is predominantly limited to Royal Horticultural Society members. Records are verified by RHS entomologists, based on samples or descriptions and information (primarily host and description of damage) provided in enquiries to RHS Garden Advice or on the on-line form. Grid references are checked against site names.Method steps
- Records of the Hemerocallis gall midge have been collected via the RHS Garden Advice (predominantly from RHS members) and from the general public via an on-line recording for at https://www.rhs.org.uk/advice/profile?pid=742
Taxonomic Coverages
Geographic Coverages
Bibliographic Citations
Contacts
originatorRoyal Horticultural Society
metadata author
Royal Horticultural Society
distributor
NBN Atlas
27 Old Gloucester St, Holborn
London
WC1N 3AX
London
GB
email: admin@nbnatlas.org
Andrew Salisbury
administrative point of contact
email: andrewsalisbury@rhs.org.uk