@article {2427,
	title = {[Konowia megapolitana Brauns (Hymenoptera, Xiphydriidae), new provincial record]},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {6},
	author = {Mannerkoski, I.}
}
@article {1930,
	title = {Nematus tulunensis Vikberg new to the Finnish fauna (Hymenoptera, Tenthredinidae)},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {4},
	author = {Viitasaari, M.}
}
@article {1385,
	title = {Interference by wood ant influences size selection and retrieval rate of prey by Formica fusca.},
	journal = {Behavioral Ecology and Sociobiology},
	volume = {28},
	year = {1991},
	pages = {1-7},
	author = {Savolainen, R.}
}
@article {1163,
	title = {Myrsamh{\"a}llet.},
	journal = {Sphinx, Ser B},
	volume = {?},
	year = {1991},
	pages = {35-48},
	author = {Rosengren, R.}
}
@article {1105,
	title = {Distribution and phenology of the Ancistrocerus and Symmorphus species in eastern Fennoscandia (Hymenoptera, Eumenidae)},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {179-189},
	author = {Pekkarinen, A. and Huld{\'e}n, L.}
}
@article {1062,
	title = {Evolution of colony characteristics in social insects. II. Number of reproducing individuals},
	journal = {American Naturalist},
	volume = {138},
	year = {1991},
	pages = { 412-433},
	author = {Pamilo, P.}
}
@article {1061,
	title = { Evolution of colony characters in social insects. I. Sex allocation},
	journal = {American Naturalist},
	volume = {137},
	year = {1991},
	pages = {83-107},
	author = {Pamilo, P.}
}
@article {1060,
	title = { Life span of queens in the ant Formica exsecta},
	journal = {Insectes Sociaux},
	volume = {38},
	year = {1991},
	pages = {111-119},
	author = {Pamilo, P.}
}
@article {858,
	title = {Alternative reproductive strategies in Formica lugubris Zett. (Hymenoptera, Formicidae). },
	journal = {Ethol. Ecol. Evol., Special Issue },
	volume = {1},
	year = {1991},
	pages = {61-66},
	author = {Cherix, D. and Chautems, D. and Fletcher, D.J.C. and Fortelius, W. and Gris, G. and Keller, L. and Passera, L. and Rosengren, R. and Vargo, E. L. and Walther, F.}
}
@article {435,
	title = {Ant communities in fragments of old-growth taiga and managed surroundings},
	journal = {Annales Zoologici Fennici},
	volume = {31},
	year = {1991},
	pages = {131-144},
	keywords = {Aculeata, Formicidae},
	author = {Punttila, P. and Haila, Y. and Niemel{\"a}, J. and Pajunen, T.}
}
@article {434,
	title = {Colonisation of clearcut forests by ants in the southern Finnish taiga: a quantitative survey},
	journal = {Oikos},
	volume = {61},
	year = {1991},
	pages = {250-262},
	keywords = {Aculeata, Formicidae},
	author = {Punttila, P. and Haila, Y. and Pajunen, T. and Tukia, H.}
}
@article {433,
	title = {Colonisation of clearcut forests by ants in the southern Finnish taiga: a quantitative survey},
	journal = {Oikos},
	volume = {61},
	year = {1991},
	pages = {250-262},
	keywords = {Aculeata, Formicidae},
	author = {Punttila, P. and Haila, Y. and Pajunen, T. and Tukia, H.}
}
@article {366,
	title = {Taxonus zhelochovtsevi sp. n. and Apethymus parallelus (Eversmann, 1847) From the Soviet Far-East (Hymenoptera, Tenthredinidae)},
	journal = {Entomologica Fennica},
	volume = {3},
	year = {1991},
	pages = {175-178},
	keywords = {Apethymus, Apethymus parallelus, Symphyta, Taxonus, Taxonus zhelochovtsevi, Tenthredinidae},
	author = {Viitasaari, M. and Zinovjev, A.}
}
@article {365,
	title = {Trichiosoma nanae sp. n., a Monophage On Betula nana From Finland (Hymenoptera, Cimbicidae)},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {67-77},
	keywords = {Cimbicidae, Symphyta, Trichiosoma, Trichiosoma nanae},
	author = {Vikberg, V. and Viitasaari, M.}
}
@article {160,
	title = {Description of the male of Campodorus hyperboreus (Holmgren, 1855) (Ichneumonidae, Hymenoptera).},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {43},
	keywords = {Campodorus hyperboreus, Ctenopelmatinae. Campodorus, Ichneumonidae, Parasitica},
	author = {Jussila, R.}
}
@article {159,
	title = {Ichneumonidae (Hymenoptera) new to Finland. I.},
	journal = {Entomologica Fennica},
	volume = {2},
	year = {1991},
	pages = {37-42},
	keywords = {Ichneumonidae, Parasitica},
	author = {Jussila, R.}
}
