Increased cave dwelling reduces the ability of cave crickets to resist dehydration.

Differential strategies for maintaining water balance are reported for female adults of three cave crickets Hadenoecus cumberlandicus, H. opilionoides and H. jonesi, a species replacement series along the Cumberland Plateau in the southeastern United States.

The pheromone of the cave cricket, Hadenoecus cumberlandicus, causes cricket aggregation but does not attract the co-distributed predatory spider, Meta ovalis.

Food input by the cave cricket, Hadenoecus cumberlandicus Hubble & Norton (Orthoptera: Rhaphidophoridae), is vital to the cave community, making this cricket a true keystone species. Bioassays conducted on cave walls and in the laboratory show that clustering in H. cumberlandicus is guided by a pheromone, presumably excreta.