Here is the full list of all 8 Travel Bug trophies - there are 4 bronze, 2 silver and 2 gold.
You've topped a Travel Bug scoreboard.
You've unlocked all distance-based trophies.
You helped Bugs travel a combined distance greater than the circumference of the world.
You helped Bugs travel a combined distance of 1,000 miles.
One of your Bugs has travelled a total distance of over 26 miles.
You've customised a guest Bug.
You've customised one of your Bugs.
You helped a Bug travel a mile.