Cornops aquaticum is a semiaquatic species of grasshopper native to the Neotropics, from southern Mexico south to central Argentina and Uruguay.

[3] Cornops aquaticum is a medium-sized grasshopper, with adults typically about 2.4–3.4 cm (0.94–1.34 in) in total length (head to wing tip); males average smaller than females.

[4] Being semiaquatic and living on floating plants, both adults and nymphs of C. aquaticum are a strong swimmers and readily enter the water.

[4] Adults live for 55–110 days;[4] after an initial feeding period of four weeks, females deposit up to seven egg packets at intervals.

[8] The water hyacinth is an aquatic plant in the family Pontederiaceae whose natural enemies keep under control in its native South America.