common true katydid
Pterophylla camellifolia

Dorsal view of ventral arm of left cercus of male. The drawing labeled "laletica" is from a population that Hebard (1941) classified as Pterophylla furcata but that is here placed in P. camellifolia.
Fig. 2, 3, 4, 5, 6, and 9 of Plate XVIII, Hebard 1941.