Lecturas adicionales Psithyrus

Lecturas adicionales Psithyrus

Michener, C.D. (2000). The Bees of the World. Johns Hopkins University Press.
Macdonald, M. & Nisbet, G. 2006. "Highland Bumblebees: Distribution, Ecology and Conservation." HBRG, Inverness, www.hbrg.org.uk. ISBN 0-9552211-0-2.

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WikiPedia: Psithyrus http://bugguide.net/node/view/240655 http://www.nhm.ac.uk/research-curation/research/pr...