Diet Overlap

Dilophus febrilis (Fever Fly) Helophilus trivittatus (Sun Fly)

Common Diet

Calluna vulgaris (heather) Cirsium arvense (Creeping Thistle) Tanacetum bipinnatum bipinnatum (Tansy)

Common Habitat

Birklands and Bilhaugh Carmarthen Bay and Estuaries/ Bae Caerfyrddin ac Aberoedd Carmarthen Bay Dunes/ Twyni Bae Caerfyrddin Clogwyni Pen Llyn/ Seacliffs of Lleyn Corsydd Llyn/ Lleyn Fens Corsydd Môn/ Anglesey Fens Fenland Kenfig/ Cynffig Limestone Coast of South West Wales/ Arfordir Calchfaen de Orllewin Cymru Lower Derwent Valley Moray Firth Morecambe Bay Pavements Morfa Harlech a Morfa Dyffryn North West Pembrokeshire Commons/ Comins Gogledd Orllewin Sir Benfro Pen Llyn a`r Sarnau/ Lleyn Peninsula and the Sarnau Saltfleetby–Theddlethorpe Dunes and Gibraltar Point Sefton Coast Severn Estuary/ Môr Hafren Solway Firth South Solway Mosses The Broads The New Forest Y Twyni o Abermenai i Aberffraw/ Abermenai to Aberffraw Dunes