Forum:Slaver wasps 320 years ago

While I was reading an old poem today, I stumbled across something that sounds like slaver wasps. The poem is a description of Northern Norway written 320 years ago by Norwegian poet Petter Dass.

An attempt at translation, from the chapter about the sami people, where he describes their connections with the devil:

His sorcery he uses also,

And sends wherever he wants,

Poisonous Beelzebub's flies,

He inserts them into man and livestock,

Hurts so many innocent creatures,

Filling them with fear and dread.

(I don't expect any award for this translation)

(“He” in this excerpt is the sami, not the devil)

However, the victims didn’t turn into revenants, it was just a means for putting various spells on people.

The original text can be found here:

http://www.dokpro.uio.no/litteratur/dass/innhold/del1.html

The chapter in question is here:

http://www.dokpro.uio.no/cgi-bin/litteratur/oratxtprod.cgi?tabell=dass&id=pd1012

It was probably common belief at the time.that the sami could do this. Do anyone know about similar references?