Butterfly & Moth
Identify a Butterfly, Moth, or Caterpillar in NA (I have an account)
ID Request of insects - <1>
identify day flying moth (If you can't identify a moth using this guide, try www.ukmoths.org.uk. Alternatively the Concise Guide to the Moths of Great Britain and Ireland, by Martin Townsend & Paul Waring, published by British Wildlife Publishing, will help you to identify any larger moths.)
Lot of pictures of butterflies by Jeffrey S. Pippen
Green Darner or Common Green Darner (Anax junius): http://www.fotopedia.com/wiki/Green_Darner
Book : Butterflies of North America by Jeffrey Glassberg (2002); newer edition (2011) is coming soon.
About Moth - Chinese: <1> ; English: <1> <2>
Why butterfly is called butterfly? <1> <2>
Why Do Diurnal Moths Have Ears?
The plight of the eastern monarch butterfly:
According to a recent study published in the journal Insect Conservation and Diversity the overwintering population of eastern monarch butterflies reached an all-time low in 2009-2010. This followed a 15 year trend of decline in monarch abundance, since records were established in 1994-1995.
The authors of the monarch study point to several reasons for the decline: (1) loss of critical overwintering habitat in Mexico through extensive illegal logging; (2) widespread reduction in the monarch’s principal food plant in the U.S., common milkweed, Asclepias syriaca, by herbicides and habitat modification; and the recent extreme weather conditions affecting both overwintering sites and in the southern U.S.