I found this individual by following the song, which was coming from a non-native shrub. The singing, along with male genitalia at the tip of the abdomen (no ovipositor), show this is a male. Note the white mottling on the face and the dark hind legs. It seems that this genus usually has some markings on the face, while Conocephalus tends to have a clear green face. (O. vulgare is an exception.)

Compare SINA photos: handsome meadow katydid, Orchelimum pulchellum. Looks rather like a Black-legged Meadow Katydid, O nigripes, but North Carolina is not in its range, see SINA. Looking at photos of the cerci, I see that this is indeed O. pulchellum. The translucent turquoise of the wings is also notable, and shown well in the best SINA photos of O. pulchellum, also from North Carolina.

A dorsal shot of this individual shows the cerci, though not real well. Their appareance is consistent with the illustration at SINA--photo not shown.

Compare to Rob's photo of presumed O. nigripes from Allentown, (eastern) Pennsylvania:



These two species appear to be very similar. Singing Insects of North America Range maps (Black-legged, Handsome) show that the ranges do overlap in the central eastern seaboard area. These might have to be differentiated based on cerci alone in those areas. Uggh!