Just spines—mechanical defense of malvaceous pollen against collection by corbiculate bees

Bees’ subtle colour preferences: how bees respond to small changes in pigment concentration

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Avoidance of achromatic colours by bees provides a private niche for hummingbirds

(2011) K. Lunau et al.   JOURNAL OF EXPERIMENTAL BIOLOGY

Evaluation of oligolecty in the Brazilian beePtilothrixplumata(Hymenoptera, Apidae, Emphorini)

(2009) Clemens Schlindwein et al.   APIDOLOGIE

Consumptive emasculation: the ecological and evolutionary consequences of pollen theft

(2009) Anna L. Hargreaves et al.   BIOLOGICAL REVIEWS

SPECIALIZED BEES FAIL TO DEVELOP ON NON-HOST POLLEN: DO PLANTS CHEMICALLY PROTECT THEIR POLLEN

(2008) Christophe J. Praz et al.   ECOLOGY

Why two kinds of stamens in buzz-pollinated flowers? Experimental support for Darwin's division-of-labour hypothesis

(2008) Z. Luo et al.   FUNCTIONAL ECOLOGY