Hunter & Hunter

George W. Hunter & F. R. HunterCollege Zoology, Philadelphie-Londres, W. B. Saunders, 1949, p. 310.

The larvae of caddis flies build portable protective cases of sand grains of fragments of debris that are fastened together by delicate silken threads. These are so typical of the species that identification can usually be made by observing the cases alone.