Final answer:
The competition between the two ground cricket species, where each species outcompetes the other in their preferred temperature range, is an example of a competitive reversal.
Step-by-step explanation:
The scenario described, where two species of ground crickets compete in different temperature regions and each species outcompetes the other in their preferred temperature range, is an example of a competitive reversal.
Competitive reversal occurs when the outcome of competition between two species changes depending on environmental conditions. In this case, Allonemobius fasciatus is better adapted to colder areas and outcompetes Allonemobius socius, while in warmer areas, A. socius outcompetes A. fasciatus. This phenomenon demonstrates the role of environmental factors in shaping species interactions and distributions.