Distribution
(
Anglèis
)
fornì da Catalog of Hymenoptera in America North of Mexico
Alaska, Yukon, N.W.T., and Labrador, south to Calif., Nev., Utah, and Colo. (Alta., B.C., Labrador, Man., N.W.T., Sask., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., and Wyo.).
- sitassion bibliogràfica
- Catalog of Hymenoptera in America North of Mexico. 1979. Prepared cooperatively by specialists on the various groups of Hymenoptera under the direction of Karl V. Krombein and Paul D. Hurd, Jr., Smithsonian Institution, and David R. Smith and B. D. Burks, Systematic Entomology Laboratory, Insect Identification and Beneficial Insect Introduction Institute. Science and Education Administration, United States Department of Agriculture.
Conservation Status
fornì da University of Alberta Museums
Unknown (Cane and Tepedino 2001).
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Cyclicity
fornì da University of Alberta Museums
Flight periods of queens ranges from early April to late October; workers: early April to late September; males: early May to late September (Thorp et al., 1983).
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- cc-by-nc
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Distribution
fornì da University of Alberta Museums
Western Nearctic region (Williams 1996).
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General Description
fornì da University of Alberta Museums
"Bombus mixtus belongs to the diverse subgenus Pyrobombus Dalla Torre which is characterized by a malar space of medium length but longer than its apical width and antennal flagellum 2.5 to 3x the length of the scape. The penis valves of the males are usually hook shaped (Thorp et al., 1983).
Abdominal segment 3 of the large bodied B. mixtus is typically covered in black pile with reddish hair on the apical portion (Curry 1984; Franklin 1912). The remainder of the segments are yellow, cloudy yellow, or reddish yellow (Curry 1984; Franklin 1912). The pleura and the face are primarily yellow (Franklin 1912) and the mesonotum has an extensive amount of black pile between the wing bases but it does not form a distinct band (Curry 1984). There is large colour variation in males and they may look similar to B. edwardsii or B. sitkensis however, B. mixtus males have very distinct hair fringes on the inner faces of the antennal flagellomeres (Thorp et al. 1983). The malar space is as long as it is wide (Thorp et al., 1983). Body size and wingspan varies between castes: queens are 11 to 15 mm with wingspans of 27 to 31 mm, workers range between 7 to 11 mm with wingspans of 17 to 25 mm, and males are 8 to 11 mm with wingspans of 21 to 25 mm. Wings are lightly stained brown (Franklin 1912)."
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Habitat
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Underground, surface or above ground nests in and above the tree line of mixed deciduous and coniferous forests (Hobbs 1967).
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Life Cycle
fornì da University of Alberta Museums
Bombus mixtus has an annual colony cycle. Queens emerge in early April from shallow hibernacula dug into the soil to forage and find suitable nest sites, often in abandoned mouse or bird nests. Pollen is collected and manipulated by the founding queen into a ball. Eggs are laid in vertical rows on the top of the ball and covered over with pollen and wax. A nectar pot previously constructed allows the queen to feed while incubating the brood clump at 30-32° C. Larvae hatch after 4-5 days and begin to feed on the pollen mass. The queen continues foraging and regurgitates nectar to the larvae through openings on the top of the brood cells. After 4 molts, larvae spin loose silk cocoons and pupate. The queen now lays a second and third batch of eggs on top of the pupal cocoons using the pollen and wax from the first batch. Female workers emerge 4-5 weeks after the first eggs are laid and take over foraging and nest construction activities. The queen now exclusively constructs egg cells and lays eggs. As the colony expands upwards and outwards and workers increase in number, fertilized eggs become young queens and males emerge from unfertilized eggs. Caste differences are physiological and large numbers of workers are able to provide the food necessary to rear queens. Males are often produced before the new queens and will leave the colony almost immediately after emergence. Young queens may perform both nest and foraging duties prior to mating. Both sexes mate multiple times. Males will mount the queens in the air and continue coitus for several minutes on a nearby surface until kicked off by the female. Once mated, queens prepare for hibernation by eating and increasing vital fat body reserves. The colony declines in late October; workers, males, and the original queen die. The newly mated queens overwinter in small cells in the soil in preparation for spring. (Adapted from Alford 1975 and Thorp et al., 1983).
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- University of Alberta Museums
Trophic Strategy
fornì da University of Alberta Museums
Polylectic, adults consume nectar and pollen from a variety of genera such as Ceanothus, Lupinus, and Rhododendron and are associated primarily with 6 different plant families in California (Thorp et al., 1983)
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Bombus mixtus
(
Anglèis
)
fornì da wikipedia EN
Bombus mixtus is a species of bumblebee. It is native to western North America, where it occurs in western Canada and the United States. It is also disjunct in the Great Lakes region.[1] It is known commonly as the fuzzy-horned bumblebee,[1] tricoloured bumblebee,[2] orange-belted bumblebee, and mixed bumblebee.[3]
This bee lives in mountain habitat, and taiga and tundra habitat in northern areas. It lives in open, grassy habitat, chaparral, shrublands, and meadows. It feeds at the flowers of ceanothus, fireweed, coyote mints, penstemons, phacelias, rhododendrons, and groundsels. It nests underground or on the surface.[1]
References
-
^ a b c d e Hatfield, R., et al. 2014. Bombus mixtus. The IUCN Red List of Threatened Species. Downloaded on 08 March 2016.
-
^ Bombus mixtus Cresson, 1878. E-Fauna BC: Electronic Atlas of the Fauna of British Columbia, University of British Columbia.
-
^ Bombus mixtus. Biodiversity of the Central Coast. University of Victoria.
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- Wikipedia authors and editors
Bombus mixtus: Brief Summary
(
Anglèis
)
fornì da wikipedia EN
Bombus mixtus is a species of bumblebee. It is native to western North America, where it occurs in western Canada and the United States. It is also disjunct in the Great Lakes region. It is known commonly as the fuzzy-horned bumblebee, tricoloured bumblebee, orange-belted bumblebee, and mixed bumblebee.
This bee lives in mountain habitat, and taiga and tundra habitat in northern areas. It lives in open, grassy habitat, chaparral, shrublands, and meadows. It feeds at the flowers of ceanothus, fireweed, coyote mints, penstemons, phacelias, rhododendrons, and groundsels. It nests underground or on the surface.
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Bombus mixtus
(
olandèis; flamand
)
fornì da wikipedia NL
Insecten Bombus mixtus is een vliesvleugelig insect uit de familie bijen en hommels (Apidae). De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1878 door Cresson.[1]
Bronnen, noten en/of referenties Geplaatst op:
16-12-2011
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen.
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Bombus mixtus
(
svedèis
)
fornì da wikipedia SV
Bombus mixtus (saknar svenskt namn) är en insekt i överfamiljen bin (Apoidea) och släktet humlor (Bombus) som lever i större delen av Amerika.
Utseende
Huvud och större delen av mellankroppen är täckt av grågul päls; sidorna och/eller bakre delen av mellankroppen är dock rent gula. Mellan vingfästena har den en svart fläck, som hos vissa arbetare är ersatt av ett svart tvärband. Hanarna har dock rent gult guvud, och hos vissa hanar är även den bakre delen av mellankroppen gul; de avvikande färgteckningarna på mellankroppen hos denna form utgörs alltså av ett brungult tvärband med en svart fläck i mitten. Den första tergiten (segmenten på bakkroppens ovansida) är alltid gul, ofta även den andra och tredje. Färgen på de resterande tergiterna varierar. efter det gula partiet följer alltid minst en svart tergit (ibland endast i form av svarta kanter på den orangefärgade tredje), medan de resterande tergiterna är orangefärgade över blekorange till gulvita. Hos vissa hanar kan dock det orangefärgade partiet vara inskränkt till mitten av den annars svarthåriga bakkoppen.[3] Vingarna är genomskinligt bruna. Drottningen är 11 till 15 mm lång med en vingbredd på 27 till 31 mm, hanarna har en längd mellan 8 och 11 mm (vingbredd 21 till 25 mm), och arbetarna är mellan 7 och 11 mm med en vingbredd på 17 till 25 mm.[4]
Ekologi
Den övervintrande drottningen kommer fram på våren (tidigt i april på norra halvklotet) och bygger ofta boet i ett övergivet musbo. Även bon på eller över markytan, som gamla fågelbon, förekommer[5][6].. Arten besöker blommor från flera familjer, främst korgblommiga och kransblommiga växter, ärtväxter (som bland annat lupiner[4]), ljungväxter (exempelvis rododendron[4]), brakvedsväxter (till exempel säckbuskar (Ceanothus)[4]) samt lejongapsväxter.[5]
Utbredning
Bombus mixtus är vanlig[3] i större delen av Amerika, från Alaska till Brasilien och norra Argentina, med undantag för de tropiska delarna.[7] I Nordamerika håller den sig vanligtvis väster om 105:e longituden, och norr om Mexiko; från Alaska och Saskatchewan till Colorado och Kalifornien.[5]
Källor
-
^ ”Pyrobombus” (på engelska). Natural History Museum, London. http://www.nhm.ac.uk/research-curation/research/projects/bombus/pr.html#mixtus. Läst 15 januari 2015.
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^ ”Bombus mixtus Cresson, 1878” (på engelska). Discover Life. http://www.discoverlife.org/mp/20q?search=Bombus+mixtus. Läst 25 mars 2010.
- ^ [a b] Jonathan Koch, James Strange och Paul Williams (2010). ”Bumble Bees of the Western United States” (på engelska) (7,56 MB). USDA Forest Service & Pollinator Partnership. sid. 58–61. http://www.xerces.org/wp-content/uploads/2008/09/Western_BB_guide.pdf. Läst 22 februari 2015.
- ^ [a b c d] ”Entomology Collection – Bombus mixtus” (på engelska). University of Alberta. http://www.entomology.ualberta.ca/searching_species_details.php?c=8&rnd=12042318&s=6276. Läst 25 mars 2010.
- ^ [a b c] Robbin W. Thorp, Donald S. Horning, Jr. och Lorry L. Dunning (februari 1983) (på engelska) (PDF (6,94 MB)). Bumble Bees and Cuckoo Bumble Bees of California. sid. s. 41-42. ISBN 0-520-09645-2. http://essig.berkeley.edu/documents/cis/cis23.pdf. Läst 9 april 2010
-
^ ”North American bumblebees” (på engelska). Bumblebee.org. http://www.bumblebee.org/NorthAmerica.htm. Läst 8 april 2010.
-
^ ”Map of Bombus mixtus” (på engelska). American Museum of Natural History. http://www.discoverlife.org/mp/20m?kind=Bombus+mixtus. Läst 25 mars 2010.
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Bombus mixtus: Brief Summary
(
svedèis
)
fornì da wikipedia SV
Bombus mixtus (saknar svenskt namn) är en insekt i överfamiljen bin (Apoidea) och släktet humlor (Bombus) som lever i större delen av Amerika.
- licensa
- cc-by-sa-3.0
- drit d'autor
- Wikipedia författare och redaktörer
Bombus mixtus
(
vietnamèis
)
fornì da wikipedia VI
Bombus mixtus là một loài Hymenoptera trong họ Apidae. Loài này được Cresson mô tả khoa học năm 1878.[2]
Chú thích
Tham khảo
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- Wikipedia tác giả và biên tập viên
Bombus mixtus: Brief Summary
(
vietnamèis
)
fornì da wikipedia VI
Bombus mixtus là một loài Hymenoptera trong họ Apidae. Loài này được Cresson mô tả khoa học năm 1878.
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- cc-by-sa-3.0
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- Wikipedia tác giả và biên tập viên
Bài viết phân họ Ong mật này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. 
