The megachild bees are really effective plant pollinators, because of their really ineffective method of collecting pollen. Rather than joining the other bee families and gathering the pollen on their hind legs they collect it under their abdomen. This isn’t a great method, and as a result they have to travel to plants a lot…more than 10 times the visits of other bee families for the same amount of pollen. Megachilid bees are also long tongued. They are divided into two Australian subfamilies.
Wikipedia 2012, ‘Megachilidae’, wiki article, 22/4, accessed 14 May 2012, <http://en.wikipedia.org/w/index.php?title=Megachilidae&action=history>.
Zborowski, P & Storey, R 2010, A Field Guide to Insects In Australia, 3rd edn, Reed New Holland, Australia.