I was wondering whether anybody knows of a good source of information
on the status of non-Apis pollinators.  I am primarily interested in
solitary hylaeid bees Numerous here in Hawaii and Australia), but also
Trigona or other species.  I know that many solitary bees have been
hard hit by both pesticides and habitat changes, any ideas on how to
monitor or raise them?  Has anybody tried trap-nesting?  If so, what
size tubing worked best?