Bumble Bees

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Studies on Scandinavian <strong>Bumble</strong> <strong>Bees</strong> 113heathery hillside exposed to the southeast. Thecolony was established in an abandoned rodentnest about 15 cm below the surface of the ground.A roof, consisting of fibrous fragments of plantsplastered together with wax, covered the comb,which had a disorderly appearance. The dataof the nest content are shown in Table IX. Oneof the queens and all the workers display apredominantly melanic appearance, the queenwith hindmost tergites whitish-haired while thoseof the workers being pale ferruginous-haired.The second queen displays a typical, thoughstrongly faded colour pattern. She was founddead in the nest, away from the comb, andmight have been an intruder. The dark queenand the workers of the first brood were capturedon returning to the nest. The former had nopollen and the latter had their corbicles onlypartly filled with pollen. The remaining fiveworkers, two of which had just emerged, werefound on the comb.The honey-pots, being larger in size than thecocoons but of similar shape, were all built atthe same level and adjacent to the first brood.Additionally five of the vacated cocoons wereused as honey-pots. A rather large pollen-cylinder,also termed pollen-pot, was built adjacentto the third brood, though detached from thecluster of cells. It contained only a little pollen.The dipterous cocoons listed in Table IX werein separate cocoons of the second bumble beebrood.A Swedish nest recorded by Boheman (Wahlberg1854, p. 202) contained melanic and nonmelanicindividuals, but is otherwise not commentedupon.In addition to the nests above, Hasselrot (1960Table pp. 158-162) succeeded in getting a queento establish a colony in an observation box.The colony was initiated 19 June and kept underobservation until I October when the developmentwas almost completed. The total numberof offspring was 8 VH 3 dd 3 ?? and one unhatchedworker pupa. Only one worker brood was raised.The author does not comment upon the longperiod of development.Flight seeson. From last half of May to end ofAugust. Queen: 16 May-27 Aug.; worker: 15June-28 Aug.; male: 4 July-z3 Aug.Biological remarksHobbs (1964) succeeded in getting hibernatingqueens to establish nests in hives set out in theTable IX. Content of a colony of B, balteatus Dahlbom, excavated in Norway: Rogaland (Ri): Sauda: OvreSandvatn, 1050 m s.m., 7 July 1936 by O. MeidellQueen, founder of the nestQueen, intruderOffspring:lst brood: workers2nd brood, lst batch: workers2nd brood, 2nd batch: workersimagines4 worker cocoons 53 4 worker cocoons, 2 worker pupae 62 3 worker cocoons, 3 worker pupae 69 3rd brood, lst batch: 2halfgrown separated worker larvaeon top of cocoon lst brood 23rd brood, 2nd batch: t halfgrown worker larvaeon top of cocoon 2nd brood, lst batch I4th brood, lst batch: 2 small larvae on top of cocoon2nd brood, lst batch 24th bro od, 2nd batch: 2 small larvae on top of cocoon2nd brood, lst batch 25th brood, lst batch: 7 eggs in cell on top of cocoon2nd brood, 2nd batch 7Total number of progeny 315 honey-potsI pollen-cylinderParasites: 2 dipter cocoons ?Brachycome devia (Fall6n)
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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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Studies on Scandinavtan Bumble Bees
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iStudies on Scandinavian Bumble Bee
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stad; Meland: Brakstad, Lansvik, Me
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on Scandinavian Bumble Bees181Fig.
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sen), Time: ? loc. H TRM; Kvitsoy:
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A free drawing by G. Langhelle, fro
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Bumble Bees

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