What is wrong with my iris?

Only Autumn Embers seems to look like this, and it doesn't look good to me. Please tell me that it's just the hot, dry weather and not something horrid. I got this iris through one of the co-ops a year ago.

Here is a closeup of the problem.

It looks like leaf miner damage to me. Trim the damaged parts of the leaves away and spray your irises and other plants in the vacinity with an insecticide/fungicide. Do you have mulch in the area where this damage is occurring? If so, you may also want to apply a granular insecticide as well.

Thanks. This area is not mulched and there are dozens of other iris in it's immediate vacinity. I will trim and spray right away.