Bumble Bees

Studies on Scandinavian Bumble Bees 135ZML, Valsiitra IVU, Vassunda IVU, Vindo NRS,Vaddo NRS, Yxlan Zll4B, Ossebygarn NRS, OstraRyd NRS. Vristmanland: Arboga ZN{{{B ZML, FanthyttanNRS, Fellingsbro Zi|dB, Guldsmedshyttan,Hiillefors NRS, Kolbtick NRS, Kdrrbo ZMB, LindesbergNRS, Sala NRS, Skultuna Z},.dB, As NR.S.Vcirmland: Arvelsiiter NRS, Arvika, Frykerud NRS,Gylleby in Sunne NRS, Hammaron NRS, FtrorrsjonNRS, Lflngban NRS, Molkom NRS, Nilsby, SiiffleNRS, Olme. Dalarne; Aspeboda NRS, Avesta ZMB,Brunnsvik NRS, Blyberg NRS, Bingsjo NRS, Idre,Leksand NRS, Ludvika NRS ZML, Mora NRS,Riittvik NRS, Sandsjo, Sjurberg NRS, Smedjebacken,Stjiirnsund, Store Tuna, Sundborn NRS, Siirna, SdterNRS, Transtrand NRS, Vikarbyn NRS, VristanvikNRS . Gcistrikland: Hamringerfjiirden NRS, Hille-Finland. Commonly occurring throughout thecountry north up to the Polar Circle and sporadicallyobserved further north, yet not recordedin Lapland (Le) (Elfving 1968).World distribution. Europe (British Isles; entireWest European continent; European USSR,except semi-desert areas north of Sea of Azovand the Caspian Depression) - Algeria - Turkey- Iran - Caucasus - Transcaucasus - Northernand Eastern KazakhstanWestern SiberiaTransbaykal Baykal Jakutia NorthernMongolia (Panfilov 1957 and in litt.; Reinig 1968).Introduced to New Zealand (Gurr 1964).Z oogeographical re mark sThe tendency to melanism confined to onlypart of Scandinavia justifies the question whetherB. hortorum consists of two Scandinavian populations:(1) a northern post-glacial populationwith gene-pool light, immigrating from the eastand (2) a southern population with gene-pooldark, i.e. with melanic traits, invading the peninsulaForsby NRS, Hogbo NRS, Trodje. Hcilsingland: Bollnds,from south. The theory is favoured by theGnarp NRS, Holmsveden NRS, Los NRS, fact that a tendency to melanism along the easternNjutflnger NRS, Orbaden NRS, Soderhamn NRS.migration route has not been observed (PanfilovMedelpad: Liden ZMB, Mattfors, Stavreviken NRS,Sundsvail, Ange . Hcirj edalen : Hamrafjiill, Ljungdalen, in litt.), whereas it is recorded, but the frequencyTdnndalen NRS ZML. Jrimtland: Bydalen, Doda not estimated, on the continent south of ScandinaviaFallet NRS, Eldsisdalen NRS, Froson NRS, Giiddede(Alfken l9l3; Stoecklrt 1933; Schmiede-NRS, Hallen, Jormlien, Jdrpen, Mattmar, Mullfjtill,knecht 1930; etc.). The present information aboutOttsjon NRS, Oviken, Snasahogarna NRS, Storlien,Svenstavik NRS, Undersiker NRS ZML, Ostersundthe identity of the northern and southern Scandinavianpopulations is meagre; anyway, a dif-NRS, Are, Areskutan. Angermanland: Bjiista NRS,Bjorna NRS, Bondsjo NRS ZML, Forsmo NRS, ference as regards. presence and absence ofHikniis NRS, Kramfors NRS, Ramsele GNM, SollefteiNRS ZML, Sidensjo NRS, Siibri, Ornskoldsvikmelanic traits does not qualify for subspecificdivision of the Scandinavian B. hortorum.NRS. Vcisterbotten' Bodarna NRS, Degerfors NRS,Hiillniis, Jorn, Urnefl NRS ZML. Norrbotten: Anttis,Haparunda, Kalix NRS ZML, Karungi NRS ZML,Lulefl NRS ZML,Lingtrdtsk, Munksund NRS, NybyggetBiologyNRS ZML, Pajala NRS, Rflnei, Overkalix NRS,Nest. Pocket-maker. Nests were recorded atOvertornei. Lapland (At. Lpm.) : Bingnds, DoroteaNRS, Fattmomakke NRS ZML, Frederika NRS,various depths from 50 cm to just below theHunneborg, Vilhelmina NRS, .A,sele NRS. Ly. Lpm.: surface of the ground. Produces large coloniesAmmarniis NRS, Bjorkfors, Lycksele NRS, Sorsele, (Dahlbom 1837; Lie-Pettersen 1901 ; HasselrotTdrna, Vindelforsen NRS, Vtistansjo. P. Lpm.: Skattriisk.Lu.Lpm.: Gtillivare NRS, Kvikkjokk, Malm-1e62).Flisht season. From middle of April to endberget, Njunjes, Sarek National Park, Sitasjaure. T.Lpm.; Abisko NRS, Jukkasjiirvi NRS, Kiruna NRS, of September. Queen: I May-9 Sept. ; worker:SvappaYaara NRS.Ander in litt. : Gotland; Fide, Lirbro. Vristerbotten:10 May-27 Sept.; male: 3 July-Z7 Sept. Twomales collected 10 May 1908 (Akershus: Moss:Hokmark, Lovanger.Jeloy (Barca) ZMA) illustrate that unfertilizedeggs are accidently laid in the first batch oftrrood.BOMBUS (MEGABOMBUS) RUDERATUS(FABRICIUS)Apis ruderata Fabricius, 177 5, p. 380 No. 7 ,lectotype ? BCL ! selected by Richards accordingto Zimsen (1964, p. 415 No. 1074). Type areaMadeira.