The Lesser Searcher, Calosoma inquisitor, is together with Calosoma sycophanta one of the few predominantly arboreal carabini in Europe. It spends most of his time in the canopy hunting for caterpillars, which is his main prey. Both species are strong flyers and can easily cover significant distances by flying. They are often more abundant in years with caterpillar plagues. From time to time and especially when more abundant, this Calosoma can also be found running on the ground.

This is a blue colour morph of the Lesser Searcher. This blue colour variation is less common then the standard coppery colour, but it can still be frequently encountered in the hills around Budapest.