Andriollo T., Naciri Y., Ruedi M. (2015) Two mitochondrial barcodes for one biological species: the case of European Kuhl's Pipistrelles (Chiroptera). Plos One, 10, e0134881
Ayasse M., Jarau S. (2014) Chemical ecology of bumble bees. Annu. Rev. Entomol. 59, 299–319
Baer B. (2003) Bumblebees as model organisms to study male sexual selection in social insects. Behav. Ecol. Sociobiol. 54, 521–533
Batalha-Filho H., Waldschmidt A., Campos L.A.O., Tavares M.G., Fernandes-Salomao T. (2010) Phylogeography and historical demography of the Neotropical stingless bee Melipona quadrifasciata (Hymenoptera, Apidae): incongruence between morphology and mitochondrial DNA. Apidologie, 4, 534–547
Berezin M.V. (1995) Geographical Diversity, Species Correlation, Population Structure and Cenotic Interactions of Arctic Bumble Bees (Apidae, Bombus), in: Grönlund E., Melander O. (ed.) Swedish-Russian Tundra Ecology. Expedition-94. Swedish Polar Research Secretariat, Stockholm, pp. 205–215
Bergman P. (1997) Chemical Communication in Bumblebee Premating Behaviour. PhD thesis, Göteborg University, Sweden
Bertsch A., Schweer H. (2011) Labial gland marking secretions of male Bombus lucorum bumblebees from Europe and China reveal two separate species: B. lucorum (Linnaeus 1761) and Bombus minshanicola (Bischoff 1936). Biochem.Syst Ecol. 39 (4-6), 587-593
Bertsch A., Schweer H. (2012) Cephalic labial gland secretions of males as species recognition signals in bumblebees: are there really geographical variations in the secretions of the Bombus terrestris subspecies? Beiträge zur Entomologie, 62, 103–124
Bergström G., Svensson B.G. (1973) Studies on natural odoriferous compounds VIII. Characteristic marking secretions of two forms lapponicus and scandinavicus of B. lapponicus Fabr. (Hymenoptera, Apidae). Chemica Scripta, 4, 231–239
Bickford D., Lohman D.J., Sodhi N.S., Ng P.K.L., Meier R., Winker K., Ingram K.K., Das I. (2007) Cryptic species as a window on diversity and conservation. Trends Ecol. Evol. 22, 148–155
Biella P., Bogliani G., Cornalba M., Manino A., Neumayer J., Porporato M., Rasmont P., Milanesi P. (2017) Distribution patterns of the cold adapted bumblebee Bombus alpinus in the Alps and hints of an uphill shift (Insecta: Hymenoptera: Apidae). J. Ins. Conserv. 21(2), 357-366
Brasero N., Martinet B., Urbanová K., Valterová I., Torres A., Hoffmann W., Rasmont P., Lecocq T. (2015) First chemical analysis and characterization of the male species-specific cephalic labial gland secretions of South American bumblebee. Chem. Biodivers. 12 (10), 1535-1546
Brasero N., Lecocq T., Martinet B., Valterová I., Urbanová K., de Jonghe R. (2017) Variability in Sexual Pheromones Questions their Role in Bumblebee Pre-Mating Recognition System. J. Chem. Ecol. 10.1007/s10886-017-0910-4
Carolan J.C., Murray T.E., Fitzpatrick U., Crossley J., Schmidt H., Cederberg B., McNally L., Paxton R.J., Williams P.H., Brown M.J.F. (2012) Colour patterns do not diagnose species: quantitative evaluation of a DNA barcoded cryptic bumblebee complex. PLoS One, 7, e29251
Claudet J., Pelletier D., Jouvenel J.Y., Bachet F., Galzin R. (2006) Assessing the effects of Marine Protected Area (MPA) on a reef fish assemblage in a northwestern Mediterranean marine reserve: identifying community-based indicators. Biol. Conserv. 130, 346-369
Coppée A., Terzo M., Valterova I., Rasmont P. (2008) Intraspecific variation of the cephalic labial gland secretions in Bombus terrestris (L.) (Hymenoptera: Apidae). Chem. Biodivers. 5, 2654–2661
Cruaud A., Gautier M., Galan M., Foucaud J., Sauné L., Genson G., Dubois E., Nidelet S., Deuve T. and Rasplus J.-Y. (2014) Empirical Assessment of RAD Sequencing for Interspecific Phylogeny. Mol. Biol. Evol. 31, 1272–1274
Dellicour S., Lecocq T. (2013a) GCALIGNER 1.0 and GCKOVATS 1.0 – Manual of a Software Suite to Compute a Multiple Sample Comparison Data Matrix from Eco-chemical Datasets Obtained by Gas Chromatography. University of Mons, Mons
Dellicour S., Lecocq T. (2013b) GCALIGNER 1.0: an alignment program to compute a multiple sample comparison data matrix from large eco-chemical datasets obtained by GC. J. Sep. Sci. 36, 3206–3209
De Meulemeester T., Gerbaux P., Boulvin M., Coppee A., Rasmont P. (2011) A simplified protocol for bumble bee species identification by cephalic secretion analysis. Insectes Sociaux 58, 227–236
De Queiroz K. (2007) Species concepts and species delimitation. Syst. Biol. 56, 879–886
Dufrene M., Legendre P. (1997) Species assemblages and indicator species: The need for a flexible asymmetrical approach. Ecol. Monogr. 67, 345–366
Engel M.S. (2011) Systematic melittology: where to from here? Syst. Entomol. 36, 2–15
Eriksen B., Molau U., Svensson M. (2006) Reproductive strategies in two arctic Pedicularis species (Scrophulariaceae). Ecography, 16 (2), 154-166
Glaser N., Frérot B., Leppik E., Monsempes C., Capdevielle-Dulac C., Le Ru B., Lecocq T., Harry M., Jacquin-Joly E., Calatayud P.-A. J. (2014) Similar Differentiation Patterns Between PBP Expression Levels and Pheromone Component Ratios in Two Populations of Sesamia nonagrioides. Chem. Ecol. 40, 923-927
Goulson D. (2010) Bumblebees: Behaviour Ecology, and Conservation. Oxford University Press, Oxford, 336 p
Heinrich B. (2005) Bumblebee economics. Harvard University Press, Cambridge, London, England, 245p
Hovorka O., Valterová I., Rasmont P., Terzo M. (2006) Male cephalic labial gland secretions of two bumblebee species of the subgenus Cullumanobombus (Hymenoptera: Apidae: Bombus Latreille) and their distribution in Central Europe. Chem. Biodivers. 3, 1015-1022
Kevan P.G. (1973) Flowers, insects, and pollination ecology in the Canadian high Arctic. Polar Record, 16, 667–674
Klein A.M., Vaissière B.E., Cane J.H., Steffan-Dewenter I., Cunningham S.A., Kremen C., Tscharntke T. (2007) Importance of pollinators in changing landscapes for world crops. Proc. R. Soc. B Biol. Sci. 274, 303–313
Kullenberg B., Bergstrøm G., Stallberg-Stenhagen S. (1970) Volatile Components of the Cephalic Marking Secretion of Male Bumble Bees. Acta Chem. Scand. 24, 1481
Lecocq T., Dellicour S., Michez D., Dehon M., Dewulf A., De Meulemeester T., Brasero N., Valterova I., Rasplus J.Y., Rasmont P. (2015) Methods for species delimitation in bumblebees (Hymenoptera, Apidae, Bombus): towards an integrative approach. Zool. Scripta 44, 281–297
Löfstedt C. (1993) Moth pheromone genetics and evolution. Philos. Trans. R. Soc. London Ser. B: Biol. Sci, 340, 167-177
Løken A. (1973) Studies on Scandinavian bumble bees Hymenoptera, Apidae. Norsk Entomologisk Tidsskrift 20, 1–218
Martinet B., Lecocq T., Smet J. and Rasmont P. (2015) A Protocol to Assess Insect Resistance to Heat Waves, Applied to Bumblebees (Bombus Latreille, 1802). PLoS ONE, 10(3), e0118591
Martinet B., Lecocq T., Brasero N., Biella P., Urbanová K., Valterová I., Cornalba M., Gjershaug J.O., Michez D., Rasmont P. (2018) Following the Cold: Geographic Differentiation between Interglacial Refugia and Speciation in Arcto-Alpine Species Complex Bombus monticola (Hymenoptera: Apidae). Syst.Entomol. 43, 200–217
Matoušková P., Luxová A., Matoušková J., Jiroš P., Svatoš A., Valterová I., Pichová I. (2008) A Δ9 desaturase from Bombus lucorum males: Investigation of biosynthetic pathway of marking pheromones. ChemBioChem, 9, 2534-2541
Michener, C.D. (2007) The Bees of the World. Second Edition. Johns Hopkins University, Baltimore, 1016 pp
Milliron H.E., Olivier D.R. (1966) Bumblebees from Northern Ellesmere Island, with observations on usurpations by Megabombus hyperboreus (Schönherr) (Hymenoptera: Apidae). Can. Entomol. 98, 207-213
Milliron H.E. (1973) A monograph of the western hemisphere bumblebees (Hymenoptera: Apidae; Bombinae). II. The genus Megabombus subgenus Megabombus. Mem. Ent. Soc. Can. 89, 81–237
Mutanen M., Kivelä S.M., Vos R.A., Doorenweerd C., Ratnasingham S., Hausmann A., Huemer P., Dincă V., van Nieukerken E.J., Lopez-Vaamonde C., Vila R., Aarvik L., Decaëns T., Efetov K.A., Hebert P.D., Johnsen A., Karsholt O., Pentinsaari M., Rougerie R., Segerer A., Tarmann G., Zahiri R., Godfray HC. (2016) Species-Level Para- and Polyphyly in DNA Barcode Gene Trees: Strong Operational Bias in European Lepidoptera. Syst. Biol. 65, 1025-1040
Oksanen J., Blanchet F.G., Friendly M., Kindt R., Legendre P., McGlinn D., Minchin P.R., O'Hara R.B., Simpson G.L., Solymos P., Stevens M.H.H., Szoecs E., Wagner H. (2017) Tertiary Vegan: Community Ecology Package. https://cran.r-project.org/web/packages/vegan/index.html. Accessed 5 Oct 2018
Paradis E., Claude J., Strimmer K. (2004) APE: analyses of phylogenetics and evolution in R language. Bioinformatics, 20, 289–290
Patiny S., Michez D., Rasmont P. (2009) A survey and review of the status of wild bees in the West-Palaearctic region. Apidologie, 40, 313-331
Paterson H.E.H. (1993) Evolution and the Recognition Concept of Species. The Johns Hopkins University Press, Baltimore, Maryland
Pekkarinen A., Teräs I., Viramo J., Paatela J. (1981) Distribution of bumblebees (Hymenoptera, Apidae: Bombus and Psithyrus) in eastern Fennoscandia. Notulae Entomologicae 61, 71-89
Potapov G.S., Kondalov A.V., Spitsyn V.M., Filippov B. Yu., Kolosova Yu S., Zubrii N.A., Bolotov I.N. (2018) An integrative taxonomic approach confirms the valid status of Bombus glacialis, an endemic bumblebee species of the High Arctic. Polar Biology, 41: 629-642
Rasmont P., Franzen M., Lecocq T., Harpke A., Roberts S.P.M., Biesmeijer K., Castro L., Cederberg B., Dvorak L., Fitzpatrick U., Gonseth Y., Haubruge E., Mahé G., Manino A., Michez D., Neumayer J., Odegaard F., Paukkunen J., Pawlikowski T., Potts S.G., Reemer M., Settele J., Straka J. and Schweiger O. (2015) Climatic risk and distribution atlas of European bumblebees. BioRisk, 10, 1–236
R Development Core Team. (2017) R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna. [WWW document]. URL http://www.R-project.org/ [accessed on 17 October 2017]
Richards O.W. (1931) Some notes on the humble-bees allied to Bombus alpinus, L. Tromsø Museums Årshefter, 50, 1–32
Richards K.W. (1973) Biology of Bombus polaris Curtis and B. hyperboreus Schönherr at lake Hazen, northwest territories (Hymenoptera: Bombini). Quaestiones entomologicae 9, 115-57
Roelofs W.L., Liu W., Hao G., Jiao H., Rooney A.P., Linn Jr. C.E. (2002) Evolution of moth sex pheromones via ancestral genes. Proc. Natl. Acad. Sci. U.S.A. 99, 13621-13626
Schlick-Steiner B.C., Steiner F.M., Seifert B., Stauffer C., Christian E., Crozier R.H. (2010) Integrative taxonomy: a multisource approach to exploring biodiversity. Annu. Rev. Entomol. 55, 421–438
Shamurin V.F. (1966) Rol' nasekomikh-opilitelei v tundrovikh soobshchestvakh. [The role of insects in tundra communities]. Organizmi iprirodnayasreda. Voprosi geographii
Skorikov AS. (1914) Les formes nouvelles des bourdons (Hymenoptera, Bombidae). VI. Russkoe éntomologicheskoe Obozrênie 14, 119-129
Soltani G.G., Bénon D., Alvarez N., Praz J.C. (2017) When different contact zones tell different stories: putative ring species in the Megachile concinna species complex (Hymenoptera: Megachilidae). Biol. J. Linn. Soc. 121(4), 815-832
Suzuki R., Shimodaira H. (2011) Pvclust: Hierarchical Clustering with P-values via Multiscale Bootstrap Resampling. Contributed package. Version 1-1.10. R Foundation for Statistical Computing, Vienna. [WWW document]. URL http://www.R-project.org [accessed on 17 October 2017]
Stenström M., Bergman P. (1998). Bumblebees at an alpine site in northern Sweden: temporal development, population size, and plant utilization. Ecography 21(3), 306-316
Svensson B.G. (1980) Species-isolating mechanisms in male bumblebees (Hymenoptera, Apidae). Acta Universitatis Upsaliensis 549, 1-42
Svensson B.G., Bergström G. (1979) Marking pheromones of Alpinobombus males. J. Chem. Ecol. 5, 603–615
Svensson B.G., Appelgren M., Bergstrom G. (1984) Geranylgeranyl acetate and 2 heptadecanone as the dominant marking secretion components of the labial glands in the bumblebee Alpigenobombus wurfleini Nov. Acta Regiae Soc. Sci. 3, 145-148
Symonds M. R. E. and Elgar M. A. (2004) The mode of pheromone evolution: evidence from bark beetles. Proc. R. Soc. Lond. B. 271, 839-846
Symonds M. R. E. and Elgar M. A. (2007) The evolution of pheromone diversity. Trends Ecol. Evol. 23, 220–228
Symonds M.R.E., Moussalli A., Elagar M.A. (2009) The evolution of sex pheromones in an ecologically diverse genus of flies. Biol J Linn Soc 9, 594–603
Taylor K., Rumsey F.J. (2003). Bartsia alpina L. J. Ecol. 91(5), 908-921
Terzo M., Urbanova K., Valterova I., Rasmont P. (2005). Intra and interspecific variability of the cephalic labial glands’ secretions in male bumblebees: the case of Bombus (Thoracobombus) ruderarius and B. (Thoracobombus) sylvarum Hymenoptera, Apidae. Apidologie, 36, 85–96
Trunz V., Packer L., Vieu J., Arrigo N., Praz C.J. (2016) Comprehensive phylogeny, biogeography and new classification of the diverse bee tribe Megachilini: Can we use DNA barcodes in phylogenies of large genera? Mol. Phylogenetics Evol. 103, 245-259
Vincenti M., Guglielmetti G., Cassani G., Tonini C. (1987) Determination of Double Bond Position in Diunsaturated Compounds by Mass Spectrometry of Dimethyl Disulfide Derivatives. Anal. Chem. 59, 694-699
Williams P.H., Cameron S.A., Hines H.M., Cederberg B., Rasmont P. (2008) A simplified subgeneric classification of the bumblebees (genus Bombus). Apidologie, 39, 46-74
Williams P.H., Brown M.J.F., Carolan J.C., An J., Goulson D., Aytekin A.M., Best L.R., Byvaltsev A.M., Cederberg B., Dawson R., Huang J., Ito M., Monfared A., Raina R.H., Schmid-Hempel P., Sheffield C.S., Sima P., Xie Z. (2012) Unveiling cryptic species of the bumblebee subgenus Bombus s. str. worldwide with COI barcodes (Hymenoptera: Apidae). Syst. Biodivers. 10(1), 21–56
Williams P.H., Byvaltsev A.M., Cederberg B., Berezin M.V., Ødegaard F., Rasmussen C., Richardson L.L., Huang J., Sheffield C.S., Williams S.T. (2015) Genes suggest ancestral colour polymorphisms are shared across morphologically cryptic species in arctic bumblebees. PLoS One, 10(2), e0144544
Williams P.H., Cannings S.G., Sheffield C.S. (2016) Cryptic subarctic diversity: a new bumblebee species from the Yukon and Alaska (Hymenoptera: Apidae). J. Nat. Hist. 50 (45-46), 2881-2893
Wyatt T.D. (2003) Pheromones and animal behaviour: communication by smell and taste. Cambridge University Press, Cambridge
Žacek P., Prchalova-Hornakova D., Tykva R., Kindl J., Vogel H., Svatoš A., Pichová I., Valterová I. (2013) De novo biosynthesis of sexual pheromone in the labial gland of bumblebee males. ChemBioChem, 14, 361–371
Žáček P., Kalinová B., Šobotník J., Hovorka O., Ptácek V., Coppée A., Verheggen F.,Valterová I. (2009) Comparison of age-dependent quantitative changes in the male labial gland secretion of Bombus terrestris and Bombus lucorum. J. Chem. Ecol. 35, 698-705