1999 January 8, Bryan N. Danforth et al., “Flowers and Insect Evolution”, in Science[1], volume 283, number 5399, →DOI, page 143:
It seems premature to conclude that bee association with angiosperms "has led to enhanced rates of speciation ... ," especially in light of the counter-example offered, until cladistic studies of a representative set of angiosperm pollinators (for example, including syrphid flower flies and bombyliid bee flies) are completed.
1997 September 5, Conrad C. Labandeira, “Permian Pollen Eating”, in Science[2], volume 277, number 5331, →DOI, pages 1421–1423:
And insect consumption of wind-dispersed pollen has been demonstrated repeatedly in such consummate pollenivores as syrphid flies (4 ), bees (5 ), and other pollenivorous insects (6 ).
