Many insects lay eggs in tight clusters; because of the shape of the eggs (like honeycomb cells themselves), the cluster looks a bit like a honeycomb. If you had a high quality macro shot, the eggs might be easier to identify definitively.
Newly hatched Beet Armyworms:
Wheel Bug (Arilus cristatus) Eggs:
Wheel bugs are common in eastern North America, but are confirmed to occupy areas of Mexico and Guatemala.
With wheel bug for size:
My guess is that you found a cluster of Wheel Bug eggs.
Females lay eggs at a low elevation on trees, bushes, twigs, and other objects. Secreted glue serves as an adhesive which maintains the cluster formation of the eggs. - Wikipedia