Family: Sisyridae


These photos supplement page 114 of the Guide to Aquatic Invertebrates of the Upper Midwest. Information on the biology of Sisyridae can be found on page 114. Sisyridae occur in lotic and lentic habitats where freshwater sponges are found. They are very small (5 mm) and are found on the outside or in the canals of sponges, and depend on the sponges for nourishment.




Sisyridae head


Sisyridae lateral tubercles