Acanthacorydalis fruhstorferi in Habitat

In nature, insects in the Corydalidae family are very sensitive to water quality. Females choose to lay their eggs in clean water, and the larvae will continue to live in water after being hatched. When there is water pollution or sudden changes in pH, the larvae cannot adapt to it and will disappear quickly from this area. Therefore, their existence is a direct reflection of the quality of local bodies of water and they are used by many foreign experts as 'living water quality indicators.'