Snail-Hunting Beetle Shows Adaptive Evolution Within Single Landmasses, Study Reports

Research in the Biological Journal of the Linnean Society reveals that the flightless snail-hunting carabid beetle, Carabus blaptoides, has undergone adaptive divergence not only across islands but also within large continental islands like Honshu, Japan. This suggests that geographic distance and environmental variation on a single landmass can drive significant adaptive evolution, especially for species with limited dispersal.