Dark-colored insect having predaceous aquatic larvae

WordNet Word definitions in WordNet
n. dark-colored insect having predaceous aquatic larvae [syn: alder fly , Sialis lutaria ]

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
alderfly \al"der*fly`\, Alder fly \Al"der fly\ Any of numerous dark-colored neuropterous insects of the genus Sialis or allied genera. They have predaceous aquatic larv[ae], which are used for bait. (Angling) An artificial fly with brown mottled wings, ...

Wiktionary Word definitions in Wiktionary
n. 1 A member of any one of the sixty-six species of the ''(taxlink Sialidae family noshow=1)'' family of megalopteran insects, each specimen of which has a body length not exceeding one inch and possesses long filamentous antennae and four large dark wings. ...

Wikipedia Word definitions in Wikipedia
Alderflies are megalopteran insects of the family Sialidae . They are closely related to the dobsonflies and fishflies as well as to the prehistoric Euchauliodidae . All living alderflies—about 66 species altogether—are part of the subfamily Sialinae , ...