What was the term for burial associations in ancient Roman culture?

The term for burial associations in ancient Roman culture is "collegia funeraticia." These were organized groups or societies formed to ensure proper burial rites, support the families of deceased members, and sometimes to provide financial assistance for funerary expenses. In many cases, joining such an association provided individuals with a sense of community and security regarding their own burial arrangements.

The other terms listed have distinct meanings that are not related to burial associations. For instance, "lectus funebris" refers specifically to the funeral bed or platform on which the deceased was laid out. "Alector" is not relevant in this context; it generally refers to a rooster or cock, sometimes associated with omens or prophecy. "Rogus" typically means a funeral pyre, the structure used for cremation, but is not associated with the communal aspect of funerary societies.

Thus, "collegia funeraticia" is the correct term because it is directly linked to the social practice of organizing funerary support within ancient Roman society.