Possible Clues:

• Tiny mound
• A number, unspecified, work round hospital, bustling place
• Home for social workers?
• Nest of insects
• A new excitement when king emerges from earthy mound
• An approach in the end introduced to work, in place of great industry
• Section of coelacanth, illogically, found in insect colony
• Evidence of a colony
• Article with lines about this reduced agglomeration of workers?
• Mound built by worker insects