A quick search on TinEye revealed two other exact matches: Chrysalis by the Venice Public Library Poets (Peppertree Press, 2008) and Understanding Change by Malcolm Webber (Strategic Press, date unknown).
I also recently came across two covers that feature the same blue butterfly: Touch (Our Senses) by Kay Woodward (Gareth Stephens Publishing, Jan 2005) and York Notes Advanced: Selected Poems – Carol Ann Duffy (Pearson, Jun 2005).
Finally, here are two butterflies-in-a-jar covers that are very similar though at the same time quite different: The Dry Grass of August by Anna Jean Mayhew (Kensington Publishing, 2011) and A World Away by Nancy Grossman (Hyperion, 2012).
Of all of these covers, my favourite by far is A World Away, which is whimsical and colourful (but may or may not have anything to do with the story, which is about an Amish teen who goes to Chicago for the summer to be a nanny!).
For other “similar covers” posts featuring butterflies, check out Blue Butterfly Covers, More Butterflies (Jar Optional) and Escaping Butterfly.