Here is the winged ant on a different leaf

Here is a link to the video of the winged one.

http://youtu.be/685piebAhRk

Here is a link that might be useful: YouTube video of the winged one and eggs

Ants do not lay eggs on plant leaves, nor do they bring their larva out to plant leaves. Most probably they were collecting either the eggs of some other insect or maybe Aphids.

While kimmsr has forgotten more than I know about gardening I am going to have to respectfully disagree and say that queen was laying eggs the workers where packing away. Amazing video.

Wish I could help on what to do.

SCG

The "eggs" appear to me to be pupae. Don't know why they're on the plant.

The pattern for ant reproduction via eggs is this:
Winged ants mate, the female loses her wings and establishes a nest before she lays eggs.

I suggest OP send this image & video to her Extension Service office for ID, then please report back to us -- because we, too, are mystified!

Locate your county's office with this map
http://www.csrees.usda.gov/Extension/

Here is a link that might be useful: locate your county's Extension Service office

Thank you so much for your responses. I have a problem with the email notice that is supposed to inform me of replies. I trying to get that fixed.

Kimmsr, I agree that they are not supposed to. All I have read indicate they do not. However, it sure looks like something was going on with what looked like ant larvae. I am continueing to monitor to see if I can catch the event again and collect samples for study.

And to all above, so far research has revealed these are called "Big Headed" ants. There is an bug expert that has taken an interest and wants to study what occurred here. As I learn more I will share it.

One explanation i recieved regarding ant larvae above ground was that there might have been an event that caused them to bring them up to safety.

Thanks folks.

Ants will move the eggs and larva from a nest that has been disturbed and you can see this frequently during heavy rainfall when the nest is flooded. However, since the queen ant is so large and ponderous getting her atop a plant to lay eggs would be an onerous task.

In an established colony, the residing queen(s) wouldn't have wings.

Winged forms are the reproductives, males & females. After they mate, the female lands, loses her wings, then establishes a new colony -- that is, if she survives.

Great feedback. Thanks. Still not sure what was causing the leaves to fall of the vinca plant though. With a 2x magnifier I was not seeing any other pests. Maybe I need to get a 10x magnifier. I sprinkled amdro ant block at the base of the plant. The ants disappeared and the leaves stopped falling off.

And like i may have stated earlier, the damage was not due to cut ants. I have those out here too....in abundance. They don't just cause the leaves to fall off. They cut into small pieces and cart away. Thry are truely amazang and truely frustrating.

And then we also have the grass hoppers! Looks like they are starting to strip some of my plants too. Most recent victims are a young bougainvillea, geranium, pepper plant....and I think a gardenia. I say think because that one could have been the cut ants.

Now I'm on a quest for grasshopper control. Praying Mantis? We are on 10 acres but really only concerned about the acre around the house.

Praying mantids are more of a novelty than an effective pest control crew.