20 totally amazing butterfly species ©Shutterstock If your heart flutters at the sight of a butterfly in flight, then surely among the 17,500 or so species found worldwide is all manner to amaze you.

Welcome to the kaleidoscopic world of the butterfly wing. How do butterflies and moths (known collectively as Lepidoptera) make use of their vibrant wing patterns? Why are some species experts in ...

The chart shows the grassland butterfly index, which is one of the status indicators of biodiversity in Europe. It is based on the population of 17 butterfly species that are characteristic of ...

How ironic that the butterfly's numbers were at record-low levels by the 1980s — and it's been in long-term decline ever since. Luckily for the Bay checkerspot, its population plunge was observed ...

On Thursday, invertebrate conservation group the Xerxes Society released the results of their 28th annual Western Monarch ...

U.S. officials moved Tuesday to protect the monarch, an iconic orange-and-black butterfly famous for its marathon migration across North America, under the Endangered Species Act. The U.S. Fish ...