WebMay 31, 2012 · The question of whether the evolutionary origin of the parasitic bumble bees (Psithyrus Lep.) was monophyletic or polyphyletic has not been convincingly resolved by conventional systematics.In this study numerical taxonomic (NT) analysis was applied to data on wing venation from a set of 13 species of Psithyrus and 60 species of non … WebThe subgenus Psithyrus includes all the parasitic species in the state and are distinctive in their lack of corbicula (they have no need to collect pollen). Written by Spencer Hardy with significant input from Leif Richardson. Vermont Atlas of Life Partners
Psithyrus Definition & Meaning - Merriam-Webster
WebPsithyrus was tested five times, one test for each pairing. The host nest chosen for the host nest-B. bimaculatus nest pairing was that nest over which the female Psithyrus spent the least time during the B. affnis-B. terricola test. RESULTS The preference of P. ashtoni females for nest odours of host and non-host bumblebees is shown in Table 1. Cuckoo bumblebees are members of the subgenus Psithyrus in the bumblebee genus Bombus. Until recently, the 28 species of Psithyrus were considered to constitute a separate genus. They are a specialized socially parasitic lineage which parasitises the nests of 'true' bumblebees, resulting in the loss of the ability to … See more • Bombus ashtoni • Bombus barbutellus • Bombus bellardii • Bombus bohemicus • Bombus branickii See more • Bombus vestalis • Bombus insularis • Bombus rupestris • Bombus norvegicus See more • Michener, C.D. (2000). The Bees of the World. Johns Hopkins University Press. • Macdonald, M. & Nisbet, G. (2006). Highland … See more signify health training portal
Ovarian Development, Ovariole Number, and Relationship to …
WebBombus campestris is a very common cuckoo bumblebee found in most of Europe. [2] Description [ edit] The bumblebee is of medium length, the queen having an average length of 18 mm (0.7 in), and the male 15 mm (0.6 in). [3] The fur of the queen is quite thin on the dorsal (upper) side. WebOne species, Bombus fervidus, apparently is able to ward off Psithyrus by covering the invading queeen with honey. In uncommon instances, Psithyrus even tries to parasitize … WebPsithyrus variabilis (Cresson, 1872). Integrated Taxonomic Information System. (January 2024). Mitchell TB. 1962. Bees of the Eastern United States. Volume II. Technical Bulletin No. 152, North Carolina Agricultural Experiment Station, pp. 1-557. Laverty TM, Harder LD. 1988. The bumble bees of Eastern Canada. Canadian Entomologist 120: 965-987. the purpose of a text