North American Fruit Explorers mailing list at ibiblio

[Jim Fruth <jfruth@uslink.net>]

    I suspect you are talking about any of various bugs from the family
Pentatomidae, aka Stink Bug or Priest Bug.  Sometimes called "Priest Bug"
because its posterior resembles the vestment worn by priests for a catholic
mass.  It is common to get one of these critters in a batch of picked
raspberries - they resist being removed - and get eaten.  Hence the bad
taste.

Jim Fruth
Pequot Lakes, MN