a metallic blue-green thorax reflects bronze and purple. in some lights, silvery pollen appears on its back, as well as a dark line that extends along the back. black setae can be found on both the propleuron and the hypopleuron, with brown setae on the prosternum. there are dark brown or black sclerites located at the wing-base, as well as dark brown or black found on the spiracle. "l. illustris" has black legs, translucent wings, and does not have a costal spine.