Just seen Raskell's post - sorry no pic of island (never taken pics in acnl, and don't know how to load up - I know I could find out).
But a description:
one fruit tree north and to the right of the central path way. Flowers cover centre part, red on one side, white on the other. (to make it easier for spotting orchid mantis). Two tile wide path (usually covered in fruit baskets, storage!), runs down the middle of the centre part, path bordered with say purple violets. Use this to run up and down, to circle island.
Approx 3 palms each side, none on the south.
Markers - a shell buried one space from the front of each palm tree. Marker for the fruit tree is a different coloured flower.
Stand on marker to swing net, makes bug catching easier & faster.
You can use the shadow the trees make (stand just outside of the shadow to swing net) - I use this on tours, but its clearer & hence faster to use the star shape to stand on.
Edit: you have to catch the butterflies, (& sell to Leila) but unwanted bugs on fruit tree just scare off, similarly hermit crabs scare. No need to catch unless you want to.
Fruit tree worth having - giant stag, rainbow stag, scarab, lantern & oak silk moth.
I farm birdwings (over 245mm) to use in other town's bug offs. (explained how this works ages ago in another thread).
http://www.belltreeforums.com/showthread.php?418393-The-Bug-Off-Which-bug-is-best
post #3