@article {2276,
	title = {Das Hypopygium von Chelifera precabunda Collin (Diptera, Empididae)},
	journal = {Bonner zoologische Beitr{\"a}ge},
	volume = {26},
	year = {1975},
	pages = {264-275},
	type = {article},
	keywords = {Empididae, male terminalia},
	author = {Ulrich, H.}
}
@article {2277,
	title = {Abwandlungen im Bau des Dolichopodiden-Hypopygiums (Diptera). I. Medetera truncorum Meigen},
	journal = {Bonner zoologische Beitr{\"a}ge},
	volume = {28(1978)},
	year = {1977},
	pages = {412-420},
	type = {article},
	keywords = {Dolichopodidae, male terminalia},
	author = {Ulrich, H.}
}
@article {2278,
	title = {Abwandlungen im Bau des Dolichopodiden-Hypopygiums (Diptera) - II: Thinophilus flavipalpis (Zetterstedt)},
	journal = {Bonner zoologische Beitr{\"a}ge},
	volume = {34},
	year = {1983},
	pages = {395-404},
	type = {article},
	keywords = {Dolichopodidae, male terminalia},
	author = {Ulrich, H.}
}
@article {2279,
	title = {Das Hypopygium von Microphor holosericeus (Meigen) (Diptera, Empidoidea)},
	journal = {Bonner zoologische Beitr{\"a}ge},
	volume = {39},
	year = {1988},
	pages = {179-219},
	type = {article},
	keywords = {Empididae, male terminalia},
	author = {Ulrich, H.}
}
@article {2280,
	title = {Enchytraeidae a prey of Dolichopodidae, recent and in Baltic amber (Oligochaeta; Diptera)},
	journal = {Bonner zoologische Beitr{\"a}ge},
	volume = {50},
	year = {2001},
	pages = {89-101},
	type = {article},
	keywords = {amber, Dolichopodidae},
	author = {Ulrich, H. and Schmelz, R. M.}
}
