In a large bowl, gently but thoroughly combine the rice, crab, avocado, cucumber and green onion.
In a small bowl or mixing cup, whisk together mayonnaise, wasabi paste, soy and vinegar. Add to rice mixture and toss to blend.
Place about 1 cup mixture into each tortilla. Roll tightly. Slice into 2-inch portions and serve. To add fiber and more nutrition to this low-fat wrap, use brown rice. – Makes 8 appetizer or 4 main-dish servings