Definition of "larvarium"

Such a range of shelving, facing north, forms an excellent larvarium; the winds will blow about your larvæ and they will be reared in a state which closely approaches the natural one.

1943, Philip Bertram Murray Allan, Talking of Moths, page 318

At the end of his so remote, so near, 1884 summer Van, before leaving Ardis, was to make a visit of adieu to Ada's larvarium.

1969, Vladimir Nabokov, Ada or Ardor: A Family Chronicle