What do you think of Brachyleptura vagans? The picture on Cedar Creek has the black down the center of the back, and B. champlaini doesn't have black in this picture.

I defer to Yanega on this one. The way I read his descriptions of the different color forms - to summarize: Beetles with all dark elytra are vagans and beetles with all orange elytra are champlaini but that both species can have varying amounts of dark and orange on the elytra. In mixed specimens the orange marking of vagans tend to be either basal spots, or thick cental bands, whereas in champlaini they are usually thin lateral stripes - I would guess that this as well as 26024-26027 are all vagans (actually a pretty nice series that shows all the diffent color forms). But this also makes me think that the Cedar Creek specimen is mislabelled since that beetle clearly has a thin lateral band. See also photo 12778 for an example of the thin lateral band that, based on Yanega, I would call champlaini. For a real confusing one see photo 17189. However, Yanega also says that the "real" way to tell them apart is by comparing the pronotal puntcures so who can say for sure, especially since almost all the lepturines can be so varialble in color and markings.

the 4 images to B. vagans. Thanks for all the research.