
Axayacatl [ɑʃɑˈjɑkɑt͡ɬ] and its plural, āxaxayacatl [ɑːʃɑʃɑˈjɑkɑt͡ɬ] are the two common names of pre-Hispanic origin used in Mexico to refer to species of aquatic insects in the family Corixidae, the eggs of which, ahuauhtli, deposited abundantly on rushes and flags in lakes and ponds, are collected and sold as a sort of Mexican caviar, as part of Aztec cuisine.

Callicorixa is a genus of water boatmen in the family Corixidae. There are about nine described species in Callicorixa.

Callicorixa praeusta is a species of Corixidae or water boatman, in the order Hemiptera.
Corixa is a genus of aquatic bugs in the family Corixidae. The fossil species C. elegans is from the Rott Formation in Nordrhein-Westfalen.
Corixinae is a subfamily of aquatic bugs in the family Corixidae. There are at least 130 described species in Corixinae.

Cymatia coleoptrata is a species of water boatman in the family Corixidae in the order Hemiptera.

Hesperocorixa is a genus of water boatmen in the family Corixidae. There are more than 20 described species in Hesperocorixa.

Hesperocorixa castanea is a species of water boatman in the family Corixidae in the order Hemiptera.

Hesperocorixa interrupta is a species of water boatman in the family Corixidae. It is found in North America.

Hesperocorixa sahlbergi is a species of water boatman in the family Corixidae in the order Hemiptera.
The lesser waterboatman or lesser water boatman is a water-dwelling insect of the order Hemiptera.

Micronecta is a genus of aquatic insects in the Corixidae family.

Micronecta scholtzi is a species of lesser water boatman in the family Corixidae in the order Hemiptera. It was first described by Franz Xaver Fieber in 1860. They are some 2 mm long and are common in freshwater ponds and lakes across Europe, preferring stagnant to moderately moving water. In Central Europe, the genus Micronecta is represented by five species, as follows:Micronecta (Dichaetonecta) pusilla Micronecta (Dichaetonecta) scholtzi Micronecta (Micronecta) griseola Géza Horváth, 1899 Micronecta (Micronecta) minutissima Micronecta (Micronecta) poweri

Micronectinae is a subfamily of water boatmen in the family Corixidae. There are at least two genera and two described species in Micronectinae.

Paracorixa concinna is a species of water boatman in the family Corixidae. It is found in Europe

Sigara is a genus of water boatmen in the family Corixidae. Some species within this genus are halophiles; for example, occurrences of the genus have been noted in the hypersaline Makgadikgadi Pans in Botswana.

Sigara arguta is a species of water boatman in the family Corixidae. It is endemic to New Zealand.

Sigara distincta is a species of water boatman in the family Corixidae in the order Hemiptera.

Sigara falleni is a species of water boatman in the family Corixidae in the order Hemiptera.

Sigara scotti is a species of water boatman in the family Corixidae in the order Hemiptera.

Sigara striata is a species of water boatman in the family Corixidae in the order Hemiptera.