Some of the oddest blister beetles in western North America are in the genus Nemognatha. Their mouthparts have become elongate to form a proboscis- a common trait among other groups of insects- but rare among the beetles. They are commonly seen on flowers feeding on nectar.
photo details: Canon MP-E 65mm 1-5x macro lens on a Canon EOS D60
ISO 100, 1/200 sec, f/13, flash diffused through tracing paper