The family Lasiocampidae comprises the eggar moths, of which 10 are resident species in Great Britain, one probably extinct and one probably an immigrant:
Poecilocampa populi, December moth — throughout Trichiura crataegi, pale eggar — throughout (vulnerableFox, R., K.F. Conrad, M.S. Parsons, M.S. Warren and I.P. Woiwood, 2006. The State of Britain's Larger Moths. Butterfly Conservation and Rothamsted Research, Wareham, UK.) ‡* Eriogaster lanestris, small eggar — south, central (Nationally Scarce B)
Malacosoma neustria, lackey — south, central (common) and north (scattered) (Vulnerable) ‡* Malacosoma castrensis, ground lackey — south-east, south-west (Nationally Scarce A) Lasiocampa trifolii, grass eggar — south, west-central (Nationally Scarce A) Lasiocampa trifolii f. flava (pale grass eggar) — south-east (Red Data Book) Lasiocampa quercus, oak eggar Lasiocampa quercus quercus — south, central Lasiocampa quercus f. callunae (northern eggar) — north, west Macrothylacia rubi, fox moth — throughout Dendrolimus pini, pine-tree lappet — rare immigrant Euthrix potatoria, drinker — south, central, north-west Phyllodesma ilicifolia, small lappet — presumed extinct
Gastropacha quercifolia, lappet — south, east-central
Species listed in the 2007 UK Biodiversity Action Plan (BAP)Butterfly Conservation, 2007. The UK Biodiversity Action Plan – Moths. Butterfly Conservation, Wareham, UK. 4p. are indicated by a double-dagger symbol (‡)—species so listed for research purposes only are also indicated with an asterisk (‡*).
See also List of moths of Great Britain (overview) Family lists: Hepialidae, Cossidae, Zygaenidae, Limacodidae, Sesiidae, Lasiocampidae, Saturniidae, Endromidae, Drepanidae, Thyatiridae, Geometridae, Sphingidae, Notodontidae, Thaumetopoeidae, Lymantriidae, Arctiidae, Ctenuchidae, Nolidae, Noctuidae and Micromoths
References
Waring, Paul, Martin Townsend and Richard Lewington (2003) Field Guide to the Moths of Great Britain and Ireland. British Wildlife Publishing, Hook, UK. .