There is no farm for this weeks Traveler's item.
Phantom Residue is found in these areas.
The exact farms depend on how u farm these areas when u do normally farm them, if u farm them.
If u don't, never fear, plenty of people do.
Basically here is ALL the info i can give u on them, which is basically the critters who drop them, where they are and/or what quests they are involved in. BTW, all of these foes are considered "Ghosts" hence Undead (double damage vs holy damage and a suitable use for "slaying" components for weapons)
The Mists (that being Underworld & The Fissure of Woe)
Banished Dream Rider
Mindblade Spectre
Smite Crawler
Wailing Lord
Banshee (only during The Wailing Lord)
Tortured Spirit (only during Wrathful Spirits)
Ghozer Dhuum (only during The Four Horsemen)
Madruk Dhuum (only during The Four Horsemen)
Thul Za Dhuum (only during The Four Horsemen)
Kazhad Dhuum (only during The Four Horsemen)
Prophecies (Ruins of the Tomb of the Primeval Kings)
Banished Dream Rider
Eye of the North (Far Shiverpeaks)
Smite Crawler (only during A Good Deed)
Tortured Spirit (only during A Good Deed)
On the plus side ALL of these little bastards drop Globs of Ectoplasm (except when u encounter them in the Eye of the North)
So farm away.
Or buy away, the price has already dropped from 3k each on Monday to 2k each today (Tuesday).
Alot of people farm these and save them, they are an excellent source of Piles of Glittering Dust (9-16 Dust per common salvage).
Ok,
take care,
Atty