The mormon species-group

Tergite 1 rounded at apex or with shallow medial emargination there, disc of tergite 1 convex, lacking tubercles, disc slightly curved to apex, not deflexed; tergite 2 weakly modified, lacking deep sulci; tergite 1 with short basal striae, striae no more than one-fourth paratergite length. Included species are: B. chisos Sabella sp. n., B. cochimi Bückle sp. n., B. kiowa Sabella sp. n., B. klamath Bückle sp. n., B. mayo Sabella sp. n., and B. mormon Bowman. This group is restricted to the western United States and northern Mexico.