How intelligent is a wasp?

How intelligent a wasp is depends on species and definition of intelligence, but wasps show surprisingly complex behaviors indicating relatively high intelligence for insects, with abilities to learn, remember, and solve problems, though their intelligence is different from mammalian intelligence and based on instinct and simple learning. Wasps have small brains with about one million neurons, far fewer than humans, but they exhibit complex social behaviors in social species like yellow jackets and paper wasps, with division of labor, nest building with precise architecture, communication through pheromones, and ability to recognize nest mates and coordinate defense. Studies show paper wasps can recognize individual faces of other wasps using facial patterns for social hierarchy, indicating visual learning. Wasps can learn to associate colors, shapes, and locations with food and remember them for days, and they can navigate using landmarks and return to nest from foraging trips. Some solitary wasps show tool use, like using pebbles to pack nest. Parasitic wasps show complex host finding and egg laying strategies. However, wasps lack abstract reasoning, self awareness, and long term planning like mammals, their intelligence is more instinctive and learned association rather than problem solving. So wasps are intelligent for insects, with good learning, memory, and social coordination, but not intelligent in human sense, and their behaviors are largely driven by instinct and simple learning rather than conscious thought.