He's such a big-head ... 

Here's an average-sized ant with an elephant-sized head. I think he is a soldier ant that was patrolling the garden wall in search of food and enemies. Then again, if you were small, would you want to fight this goliath-headed machine?

Order: Hymenoptera (ants, bees, wasps etc.)

Family/genus: Unknown

Vernacular name: Unknown

Scientific name: Unknown