Essex Field Club on Facebook

Video about the Club

Watsonalla binaria
find out more... Oak Hook-tip 2 Copyright: Ben Sale

Essex Field Club
Essex Field Club
registered charity
no 1113963
HLF Logo A-Z Page Index

Visit Our Centre

EFC Centre at Wat Tyler Country ParkWe are normally open to the public at our centre at Wat Tyler Country Park every Saturday, Sunday and bank holiday 11am-4pm, check. We are also open on Wednesdays 10am-4pm.
Autumn recording Record Grey Squirrel Record Fly Agaric
Record Ivy Bee
Record Wild Teasel
Record Sloe, Blackthorn
Record Garden Spider Record Nigma walckenaeri spider

Species Account for Merzomyia westermanni

previous species | next species

Merzomyia westermanni  (Meigen, 1826)
Diptera: other groups: Tephritidae

Merzomyia westermanni

Maps produced by MapMate®. Data overlays Copyright © Essex Field Club 2018.
Reproduction for study and non-profit use permitted, all other rights reserved.

Click on dot to query records

National status: Local
Essex RDB: Listed

Additional Phenology Data


Merzomyia westermanni
Merzomyia westermanni

upload a new image

Taxonomic group: flies (other) (Diptera: other groups) - County data   
Please report any problems with this record:
VC error
GR error
Taxon ID suspect
Structural habitat suspect
Other problems, please explain here:


Species text
The species is scarce, with nearly all Essex records in the south of the county. Nationally it has a strongly southeastern distribution with almost all records south of a line between the Wash and Severn map in Clemons (2004). It is a gallfly, whose larvae form a gall in the flower head of Ragwort Senecio, especially Hoary Ragwort S. erucifolius. Infected plants are usually obvious because the swelling forces up groups of pappus hairs. References

Species text last edited on Tue Mar 20th 2007 by user 3


Broad Habitat Data (based on 53 records with habitat information)

Broad subhabitat Data (based on 1 records with subhabitat information)

Structural Habitat Data (based on 50 records with structural habitat information)

Habitat Detail and Method (based on 55 records with habitat detail and method information)

Recorded management for locations with Merzomyia westermanni

Recorded substrate and hydrology for locations with Merzomyia westermanni

Why not join the Club, register and add a new species page
Interpretation of distribution maps