Found in the deep crevassed bark of eastern cottonwood trees, taking in the sunlight.
Diurnal Firefly (Ellychnia corrusca) photo = Firefly,Diurnal_MAC_©DaveSpier_D028362p Ellychnia are large, diurnal fireflies, but adults lack light-emitting organs.
BugGuide ref.: http://bugguide.net/node/view/42641
Lampyridae is a family of insects in the beetle order Coleoptera. They are winged beetles, and commonly called fireflies or lightning bugs for their conspicuous crepuscular use of bioluminescence to attract mates or prey. Fireflies produce a "cold light", with no infrared or ultraviolet frequencies. This chemically produced light from the lower abdomen may be yellow, green, or pale red, with wavelengths from 510 to 670 nanometers.