Green Lacewing

 

 

That’s the source of our mystery, thank you, Becky!

 

They are native to Texas and are often bred and released in batches as a biological pest control.  Their larvae eat aphids and other garden pests.

 

Here is what the adults look like.

 

 

(Not my photos.)

 

They lay their eggs on the underside of leaves, each one on an individual stalk which protects them from egg-predators.

 

Mystery solved.

Of course, it still could be space aliens disguising themselves to look like green lacewing eggs…