https://blendermarket.com/products/spyderfy-bug-system-add-on

The “Spyderfy” add-on is a powerful tool that allows filmmakers and 3d Artists to add customizable bug boid systems to the scene with several clicks! With its assets and intuitive user interface menu, it provides the ability to add various creature and bird boid particle systems with animated 3d assets attached! The Spyderfy add-on for Blender 3d is a great tool for adding unique bug effects or even just to add some life to your renders! You can now create bug systems for your live-action films and 3d art within minutes!