Atta Ant, Leafcutter Ant

Description:

I hope I got the species right. This massive, 1"+ ant queen came as a real shock to me, thinking it was an ordinary worker ant. It took awhile to find out she is a queen, having just lost her wings. Look at her shoulder in #1 and you'll see where one was attached. She is a dull almost-black color with red bulbs on either side of the head.

Habitat:

Lowland rainforest along the north bank of the Amazon River, 60km east of Iquitos. Wikipedia says colombica is found as far south as Colombia, but I found this specimen just south of the border, so perhaps it is something else.

Notes:

Check out the thumb in #4. It's a man's thumb.