These tail movements are in a dorsoventral plane, and there is no perceptible movement of the body.
The ischium in Pedioecetes is wider (in dorsoventral extent), especially posteriorly, than in Tympanuchus.
Cylindrical form distorted by slight tapering and dorsoventral flattening.
Posteriorly, the flange attains a dorsoventral width of 2.0 mm.
The maxillary part of the zygoma varies from broad to slender in dorsoventral width in both species.