Complex sentence: Swarming behavior can make outdoor activities unpleasant or intolerable, and can affect livestock production; during the eighteenth century, the "Golubatz fly" ("Simulium colombaschense") was a notorious pest in central Europe.
Split into simpler sentences: Swarming behavior can make outdoor activities unpleasant or intolerable, and can affect livestock production. During the eighteenth century the "Golubatz fly" ("Simulium colombaschense") was a notorious pest in central Europe.