Complex sentence: The walkers cicada is common on the hottest of summer evenings or afternoons, These cicadas are common deep in floodplains or creeks where they favor willows, cottonwoods, birches, and sycamores.
Split into simpler sentences: The walkers cicada is common on the hottest of summer evenings or afternoons. Where they favor willows, cottonwoods, birches, and sycamores.