Baetidae (Blue Winged Olive)

Ephemerellidae(Henderickson, Sulphur's,PMD's,BWO's)

These are the most common mayflies in NewBrunswick, I would recommend 10-16 size hook's.

Also i would get the dun(female) version and nymph's of these specie's. A "spent" version is also a good idea too. I will have a more complete list of flie's coming soon, I have been tying quite a bit lately and will have many of this flies available for the trip including some special one's.(Zebra bogger's -Shawn)

There is some excellent information on http://www.troutnut.com/hatch/5/Mayfly-Ephemerellidae-Hendricksons-Sulphurs-PMDs-BWOs