The New International Encyclopædia/Fish-Fly

FISH-FLY. One of a group of large neuropterous insects that pass their early stages in the water and are united into the family Sialidæ, of which the alder-flies, dobson, and similar forms are also members. The name is more particularly given to the genus Chauliodes, which are distinguished from Corydalis by the comb-like or feathery feelers, and reach a great size. The fish-flies lay their eggs upon vegetation overhanging streams, whence the larvæ, as soon as hatched, drop into the water, and go about preying upon aquatic animals. “When ready to transform to pupæ,” quoting Howard, “they crawl out upon the bank and are then found in cavities under stones or even under the bark of trees.” See Corydalis.