Bombus gerstaeckeri Morawitz, 1881 (Hymenoptera, Apidae) : observations sur la biologie d’un bourdon localisé et oligolectique

Abstract

Bombus gerstaeckeri Morawitz, 1881 (Hymenoptera, Apidae): observations on the biology of a localized and oligolectic bumblebee. - Bombus gerstaeckeri Morawitz 1881 is a particular species for its scarcity and oligolecty on species of the genus Aconitum (Ranunculaceae). We performed a sampling of B. gerstaeckeri across its entire distribution range during the summers of 2010 and 2011, in the framework of a study on the evolution of floral specialisation with a phylogeographic approach in the subgenus Megabombus. Here we present recent observations during our field surveys.