References

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BugGuide 2011. <URL: http://bugguide.net/node/view/15740>. Accessed 26 March 2012.

Bumblebee.org 2012. <URL: http://www.bumblebee.org/invertebrates/Ephemeroptera.htm>.  Accessed 4 April 2012.

Carde, R. and Resh, V. 2003. Encyclopedia of insects. Academic Press, San Diego, California,USA

Dunn, G. 1996. Insects of the great lakes region. The University of Michigan Press, Michigan, USA

Jerry Hadden's Guide Service 2010. <URL:http://www.delawareriverguide.net/insects/insects.html>. Accessed 4 April 2012.

Marshall, S. 2006. Firefly encyclopedia of insects and spiders. Firefly Books Ltd, Buffalo, New       York, USA.

MayFlyNews.net 2012. <URL: http://mayflynews.net/index.html>. Accessed 1 April 2012.

O’Toole, C. 2002. Firefly encyclopedia of insects and spiders. Firefly Books Ltd, Buffalo, New        York, USA.

Papp, C. And Swan, L. 1972. The common insects of north america. Harper and Row, Publishers, New York, New York, USA

Purdue University 2012. <URL: http://www.entm.purdue.edu/mayfly/ca-species-list.php>. Accessed 2 April 2012.

Schlager, Neil. 2004. Grizimek's animal life encyclopedia. The Gale Group Inc, Farmington   hills, MI, USA

University of Wisconsin- La Crosse. 2012. <URL: http://uwlax.edu/>. Accessed 7 April 2012.

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