Pachytrachis tumidus, the Durmitor bush-cricket, is a species of a katydid found in Montenegro and Bosnia and Hercegovina.
This species' range is primarily in Montenegro, with a known extension into Bosnia and Herzegovina. It inhabits high-altitude rocky slopes, often with juniper bushes, typically above 1,400 meters. It is a nocturnal predator and scavenger, feeding on small insects and plant matter.