@article {540,
	title = {Two new Palaearctic Syrphidae (Diptera)},
	journal = {Entomologica Scandinavica},
	volume = {13},
	number = {4},
	year = {1982},
	pages = {441-444},
	address = {Copenhagen},
	keywords = {Arthropods, Brachyopa obscura, Dipterans/True Flies, Insects, Invertebrates, Leningrad region, New species, Orthonevra stackelbergi, RUSSIAN SFSR, Syrphidae},
	author = {Thompson, F. Christian and Torp, Ernst}
}
@article {95,
	title = {Revision of hover-flies of the genus <i>Blera</i> Billberg, 1820 (Diptera, Syrphidae). 1},
	journal = {Entomologicheskoe Obozrenie},
	volume = {70},
	number = {1},
	year = {1991},
	note = {263},
	pages = {204-213},
	address = {Moscow},
	keywords = {Arthropods, Blera, Dipterans/True Flies, Insects, Invertebrates, RUSSIAN SFSR, Syrphidae, Systematics},
	author = {Barkalov, A.V. and Mutin, V.A.}
}
