Insect larva identification

[greenguru]

Hopefully someone will be able to identify and help me erradicate these from my Cymbidium collection.
I was sent a dozen or so Cymbidium back bulbs this past spring. I inspected them and found nothing out of the ordinary wrong so I potted them up. They all were doing great until yesterday when I observed the base of a new growth was discolored. As I tugged on the leaves to get a better look, they popped right off. What was left is what you see in the pic of me holding the bulb. The interior of both the original back bulb and the new growth was infested with little white worms - also pictured in the attached pics. My question is, what are these and what can I do to erradicate them and also protect my other Cymbidiums from the same fate.