@book {455,
	title = {Symphyta (except Tenthredinidae)},
	series = {Handbooks for the Identification of British Insects.},
	volume = {6(2a)},
	year = {1981},
	pages = {67},
	author = {Quinlan, J and Gauld, ID}
}
@book {452,
	title = {The Hymenoptera},
	year = {1988},
	publisher = {British Museum Natural History and Oxford University Press},
	organization = {British Museum Natural History and Oxford University Press},
	author = {Gauld, ID and Bolton, B}
}
