Chapulínes, grasshoppers in English, usually flavored with lime, salt and chile powder are the most commonly eaten insects in Mexico and are available almost year round. The first time I ate chapulínes, they were served on a salad, used like bacon bits. Chapulínes are commonly eaten as a snack.
Chicatanas are leaf-cutter ants in English. One night a year at the beginning of rainy season, swarms of queen ants will leave their nests to establish new colonies. They are attracted to lights, sometimes people will use flood lights to attract them. In the morning after the swarm, people are out in the streets with bags scooping them up. It is also a busy morning for birds. Within a few hours of sunrise, there will not be a chicatana to be found, only a few wings.
Live chicatanas are placed in water until their wings fall off or can be pulled off easily. They are then roasted. Roasted and ground up, they can be added to salsa or can be used in mole. Although they are expensive, they are also great just to snack on. A kilo (2.2 lbs) of dried chicatanas will cost you 1000 pesos (U.S. $55) in 2019. Dried chicatanas are usually available year round.
Gusanos de Maguey or maguey worms can be eaten as a snack. They often are found in mezcal, a type of alcohol made from maguey. The image below of gusanos de maguey in the plastic yellow bucket is not mine and was downloaded from wikipedia.com.
If you are interested in learning more about Mexican foods, you might want to visit Los Nopales (Prickly Pear) or Mexican Plants and Foods.
Photos taken by Marc Wilkinson. I, the copyright holder, hereby publish these photos under the following license: Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0).