Bumble Bees

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Studies on Scandinavian <strong>Bumble</strong> <strong>Bees</strong> 187ly longer than distal width, about as long as Ara r.Clypeus bending towards the base. Outer surfaceof hind tibia barely or not alutaceous. To rathercoarsely granulated. Coat even, very short. Bodyrobust, wings evenly infuscate.Queen measurements. N - 15; Sweden:Skine ; malar space: 1 .05 mm ( +0.05 +0.01)range: 1.00-1.15 mm; 'radial length': 4.38 mm(+0.11+0.02) range: 4.25-4.55 mm; interalarwidth : 5.47 mm ( +0.18 +0.05) range : 5.23-5.73 mm. Body of large size.Colour pattern Tn-u with variable mixture ofblack and greyish-white or pale dull fuscoushairs. Otherwise coat black or brownish-black.Variation. Individuals with indication of yellowcollar, often reduced to lateral yellow patches,were examined, likewise those with some yellowhairs on scutellum. Workers with yellow hairson T1 were also traced.MaleMorphologicalcharacters. St u distally gentlyrounded and even, i.e. without lateral swellings.St, and genitalia (Figs. 43A-B); flattened preapicalprocess of penis valve tri-or quadridentatewith lateral teeth strongly projecting (Fig. 43C),occasionally bidentate with only one toothstrongly projecting. Coat rather even, moderatelylong. Body of medium size.Colour pattern Pile of vertex ranging from allblack to predominantly yellow. Collar, scutellum(except for a small black-haired anterior medianarea), Tr, lunate anterior pafi of T, with paleyellow hairs. At least fringes of Tu-u yellowishwhiteor whitish. Episternum, mid- and hindfemora with variable but usually predominantadmixture of whitish hairs. Sternites usuallywhitish-haired. Otherwise coat black. Interalarband, broad, occupying more than half ofmesonotum, posteriorly more or less curved, i.e.including black hairs of scutellum.Variation. Gastral tergites individually witha vafiable mixture of dark and light hairs, oftenfringed whitish. Occasionally Tr-, predominantlyblack-haired andlor To-u entirely yellowishwhite.Slightly melanic individuals were alsoexamined.Distribution (Fig. 92)Norway. Rare. With exception of two queensfrom the western coast I have only examinedspecimens from scattered localities in the southeasternlowlands, in fact restricted to the areasaround Oslofiord. The list below reveals norecent records and the present distribution isuncertain.It is unlikely that the abundance of B. subterraneushas ever been great in the extreme westernarchipelago northwest of Bergen as indicated byLie-Pettersen (1905, p. 10).Theauthor musthave confused the species with melanic B. hortorumeven though he pointed out that bothoccurred together in the actual area. No B.subterraneus individuals were traced in his collection.A total of 23 specimens was examined.List of localities. Ostfold.' Moss: Jeloy ? 24 May1908 (Barca) VCA. Akershus; As: Vollebekk ? July1949 (?); Oslo: ? 27 July 1844 (Dahlbom) ZML 3 99(Siebke)? H (Esmark) ZMO, Slemdal ? 30 May 1910(Sch.) TRM, Toyen 4 HH (Siebke) ZMO, V. Aker 2W(Siebke) ZM.O. Buskerud (Bt,).' Hurum: Filtvedt 3 VVd 8 Aug. 1910 (Sch.) TRM. Vestfold; Notteroy: Teieq 25 Aug. 1934 V 2 Aug. 1935 (Bache). Hordaland(HOy).' Fana: Skipanes ? 28 July 1907 (Barca) VCA.HOi: Etne: Etne ? 2l June 1923 (Mei.).Unrevised records: Vest-Agder ( VAy); Flekkefjord:Loga and Hordaland (HOi): Ullensvang: Ullensvang(Meidelll934a) are questioned (Fig. 92).It is uncertainwhether the author, who obviously recognized thespecies, examined the actual individuals himself.Correction. Records from Hedmark (HEs):Odalen and Sor-Trcindelag (STi): Oppdal: Drivstua(Siebke 1880) were revised to B. ltortorumand those from Buskerud (Bv) : Al (Strand 1898a)likewise to B. hortorum and B. sporadicus respectively.Record from Hedmark (HEs) : Vang:Hjellum (Wexelsen & Skire 1934) was revisedto B. hortorum (Meidell unpublished).Sweden Widely distributed throughout thelowlands northeast to 60o 30' N in Uppland, alsooccurring in 6land and Gotland. The presentstudy agrees with Kruseman (1959) that thenorthern border area coincides with that of regioquercina (cf . Figs. 2 and 92).Therefore a recordof this species in Dalarne, in the forest belt ofHtirjehhgna mountains, cf. the list below, is
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Z k/ /4.evQ4h,"./Lt:ffNORSK ENTOMOL
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In memory ofOve Meidell (1 903- 194
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Studies on Scandinayran Bumble Bees
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Studies on Scandinavian Bumble Bees
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with a bidentate subapical process(
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Studies on Scandinavian Bwmble Rees
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8" E.Grenwd 1d 12" 11' 16"Studies o
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Bumble Bees

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