I often get holes in Sarracenia when a wasp gets in (I guess 'wasp'
probably means different things in different parts of the world, but
I mean a yellow and black stinging insect, a bit larger than what
Sarracenias normally catch). Wasps can sometimes bite a hole in the
pitcher and escape, but these holes obviously appear in Summer, and
are not at the bottom - either at the level where the wasp gets
stuck, or at the level of existing dead insects.
-- Clarke Brunt (clarke@brunt.demon.co.uk)