Ilythea spilota is a species of 'shore flies' belonging to the family Ephydridae. It is a Holarctic species with a limited distribution in Europe They are found along shorelines of small streams. The larvae consume pinnate diatoms. Newly hatched larvae form a protective case by fastening a mix of sand grains and detritus to their dorsal surfaces. Distribution Canada, United States, Europe. References Ephydridae Insects described in 1832 Taxa named by John Curtis Diptera of Europe Diptera of North America