alder fly

Noun
  1. Dark-colored insect having predaceous aquatic larvae (synset 102269516)
    is a type of: neuropteran, neuropteron, neuropterous insect - insect having biting mouthparts and four large membranous wings with netlike veins
    belongs to: genus sialis, sialis - type genus of the Sialidae
    same as: alderfly, sialis lutaria

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