These little black weevils are cowpea curculios (Chalcodermus aeneus Boheman). The adults laid eggs in the beans and peas while they were growing in the garden. The new adults are now emerging from the beans. They have been in the beans all the time.
To prevent this problem, temperature treat dry beans before storing. Two methods can be used: 1. Place in freezer for 48 hours. 2. Place in oven at 120 degrees F for 30 minutes. After treatment, bring to room temperature and seal in jars or other containers.
