Good job from puelche on Bug's Life on Chile.
I would like to throw the occasional flea into the equation.
Yes,there is no major venomous critters in Chile.
On the matter of the "cacuna" is really named Cuncuna (,and it is basically a spiny caterpillar redish to black in color that attack pines specially in the south of chile ( i used to go down South and buy pine in logs ).
If you see one try no to touch it, stings like hell.
Pictures here:
http://www.forestryimages.org/browse/detail.cfm?imgnum=0017002 and here
http://www.forestryimages.org/browse/detail.cfm?imgnum=1428136.
On the vinchuca,pictured here,
http://i52.photobucket.com/albums/g12/zulu789/vinchuca_g.jpg . these is a nasty bug that carries and transmit the "Chagas Disease" and is mostly found in the North ,this bug likes to live in the straw roof and in the cracks of adobe houses.
More from my friends of Wiki, here
http://en.wikipedia.org/wiki/Chagas_disease
Just for the anecdotic point it is rumored that the disease that kill Charles Darwin was "Chagas disease" that he contracted during his trip from Argentina to Chile.