Oligolectic bee species in Northern Europe (Hymenoptera, Apoidea)

Evolution of flower specialization in bees, the concepts of poly-, oligo- andmonolecty are reviewed. About 60 species recorded in the area of Finland and Sweden are regarded as oligolectic. The proportions of oligoleges among all pollen-collecting bee species are about 30 percent in alarge area of central and Northern Europe. The proportion is about 15 percent in the northern boreal area of Finland and Sweden, where the percentage of polylectic bumblebees is much greater than in more southern areas. Of the solitary bee species recorded in Finland and Sweden, 25 arc regarded as narrow oligoleges, of which 6 species collect pollen from Campanula and 5 from Salix. Eusocial Bombus consobrinus is regarded as a facultative narrow oligolege of Aconitum septentrionale and, apparently, this bee species is the only oligolege in northern Europe, whose distribution completely covers that of the pollen plant. The distribution limits of some narrow oligoleges (e.9. Eucera longicornis and Andrena hattorfiana) approximately follow certain frequencies of their principal pollen plants (lathyrus pratensis and Knautia, respectively). Of the oligolectic bee species in Finland, 32 occur on the lists of threatened species of England, southwestern Germany or Poland. Records of E. longicornis and A. hattorfiana from various periods are given as examples of the decline of oligolectic bees in Finland during recent decades.

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Supplementary note on the solitary bee fauna from the Suez Canal region of Egypt (Hymenoptera: Apoidea)

Journal of Melittology ◽

10.17161/jom.v0i47.4835 ◽

2015 ◽

pp. 1-5 ◽

Cited By ~ 8

Author(s):

Mohamed A. Shebl ◽

Sebastien Patiny ◽

Denis Michez

Keyword(s):

Present Note ◽

Suez Canal ◽

Solitary Bee ◽

Supplementary Note ◽

Number Of Species ◽

Oligolectic Bees

Previous surveys (2011–2013) of the bee fauna from the Suez Canal region, Egypt, recorded a total of 55 species. Those surveys did not include important floral species among the Asteraceae, a family known to be associated with various oligolectic bees. The aim of the present note is to report bees visiting four uncultivated species of Asteraceae that are common in the region during the Spring of 2014. Nine species of bees were recorded from these flowers, these increasing the number of species recorded from the Suez Canal region to 62. Some species, such as Daypoda sinuata Pérez (Melittidae) and Panurgus dentatus Friese (Andrenidae), are known oligoleges of Asteraceae.

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A lesson in urban mycology: Critically Endangered polypore Trametes suaveolens (Basidiomycota) re-discovered in Estonia

Folia Cryptogamica Estonica ◽

10.12697/fce.2018.55.09 ◽

2018 ◽

Vol 55 ◽

pp. 91-95

Author(s):

Kadri Runnel ◽

Sulev Järve ◽

Asko Lõhmus

Keyword(s):

Threatened Species ◽

Critically Endangered ◽

Northern Europe ◽

City Development ◽

Salix Fragilis ◽

Host Trees ◽

Conservation Measures ◽

Viable Population ◽

The Baltic ◽

Urban Conditions

The conspicuous, mostly willow-inhabiting polypore Trametes suaveolens is a threatened species in Northern Europe. In Estonia it is listed as Critically Endangered, and has not been found since 1984. We report an apparently viable population discovered in Central Tallinn, inhabiting old Salix fragilis and S. alba trees and stumps along ca. 1.5 km of the Baltic seashore. The host trees are prone to removal due to city development and park care reasons. We discuss potential conservation measures for sustaining this unique population in the urban conditions. Pajutagel (Trametes suaveolens) Eestis taasleitud Peamiselt remmelgatel silmatorkavaid viljakehi moodustav pajutagel (Trametes suaveolens) on Põhja-Euroopas ohustatud liik. Eestis on selle liigi seisund hinnatud kriitiliseks ja viimane dokumenteeritud leid pärineb 1984. aastast. Siinses artiklis kirjeldatakse Tallinnast avastatud populatsiooni, mis asustab u. 1,5 km mereäärsel lõigul rabeda remmelga (Salix fragilis) ja hõberemmelga (S. alba) vanu elus puid ja kände. See asurkond oli 2018. aastal küll elujõuline, kuid tema elupaika ohustavad linna arendustegevus ja pargihooldus. Artiklis esitatakse soovitusi nii pajutagla säilitamiseks Tallinnas kui ka üldiselt puitulagundavate ohustatud seeneliikide kaitseks linnatingimustes.

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When beggars are choosers-How nesting of a solitary bee is affected by temporal dynamics of pollen plants in the landscape

Ecology and Evolution ◽

10.1002/ece3.4116 ◽

2018 ◽

Vol 8 (11) ◽

pp. 5777-5791 ◽

Cited By ~ 5

Author(s):

Anna S. Persson ◽

Florence Mazier ◽

Henrik G. Smith

Keyword(s):

Temporal Dynamics ◽

Solitary Bee ◽

Pollen Plants

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Bombus (Megabombus) consobrinus Dahlbom, 1832 in the European North of Russia: its distribution and foraging preference

Fauna norvegica ◽

10.5324/fn.v41i0.3903 ◽

2021 ◽

Vol 41 ◽

pp. 27-33

Author(s):

Grigory Potapov ◽

Yulia Kolosova

Keyword(s):

Northern Europe ◽

Northern Eurasia ◽

Bumblebee Species ◽

European North ◽

Close Relationship ◽

Foraging Preference ◽

History Of ◽

Aconitum Septentrionale ◽

Relationship Of

The focus of this study is to summarize the data on the distribution and foraging preference of Bombus (Megabombus) consobrinus Dahlbom, 1832 in the European North of Russia. The range of B. consobrinus in this region mostly repeats the disjunctions of the range of Aconitum septentrionale that is also known in Scandinavia. In other regions of Northern Eurasia, the close relationship of B. consobrinus with Aconitum is not obvious. This bumblebee species may be regarded as oligolectic in Northern Europe and the European North of Russia. We assume the presence of a coadaptive relationship of this bumblebee species with A. septentrionale in this region that presumably have been caused by the complex history of B. consobrinus in the European North.

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