The shnitnikovi group

Diagnosis. Members of this group can be recognized by the following characters: (1) tip of tibial apophysis blunt, slightly bent ventrally, (2) subtegulum hidden by tegulum, (3) tegulum height lower than the height of embolus, (4) seminal duct horizontal, (5) embolus spiraling, (6) embolus starting at about 4 o’clock, (7) tegular ridge absent, (8) epigyne with wide septum and (9) vulva with two pairs of accessorial glands (Ag).

Composition. This group encompasses the following species: B. nakonechnyi sp. n., B. saraevi Ponomarev, 2008, B. shnitnikovi (Spassky, 1934) and B. yakovlevi sp. n. Taxonomic status of B. saraevi requires further investigation (see below).