What are the Devaputra / Devaputta?

I have occasionally heard about the Devaputra (Sans.) or Devaputta (Pal.), particularly in regards to Mahayana, but haven't been able to find out very much about what exactly these are, as a category or class. Presumably they are not the same thing as the sons (and daughters) of Devas in Hinduism (and in also Greek mythology), wherein they usually refer to the physical progeny of divinities, who are often have supernatural powers and are involved in heroic exploits. What do Devaputra mean in Buddhist thought?