Our understanding of bee phylogeny has improved over the past fifteen years as a result of
new data, primarily nucleotide sequence data, and new methods, primarily model-based …

The increasing availability of large molecular phylogenies has provided new opportunities to
study the evolution of species traits, their origins and diversification, and biogeography; yet …

Located in the northwestern fringes of Africa, Morocco is situated south of europe, at a
crossroad between the Atlantic Ocean in the west, the Mediterranean Sea in the north and …

A unique feature among bees is the ability of some species of Megachile Latreille sl to cut
and process fresh leaves for nest construction. The presence of a razor between the female …

Classification and evolutionary studies of particularly speciose clades pose important
challenges, as phylogenetic analyses typically sample a small proportion of the existing …

Bees are among the most important pollinators of flowering plants in most ecosystems.
Recent concerns about population decline worldwide have highlighted the urgent societal …

Most major modern families of Hymenoptera were established in the Mesozoic, but the
diversifications within ecologically key trophic guilds and lineages that significantly influence …

Recent work has demonstrated that many bee species have specific cytochrome P450
enzymes (P450s) that can efficiently detoxify certain insecticides. The presence of these …

There are more than 20 000 bee species worldwide (Michener, 2007), many of them vital
pollinators of both native and cultivated plants. In the United States alone, native bees (ie …

A portable, full-color photographic guide to the most commonly seen bees in the western
United States and Canada Bees play a vitally important role in the pollination of native …