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Related to Alderflies: Sialidae, dobsonflies


Any of various insects of the family Sialidae, having two pairs of dark many-veined wings, long antennae, and aquatic larvae.

[Probably so called because the mature insects can be found resting on foliage in the moist habitats near lakes and streams where alders typically grow.]


(Animals) any of various neuropterous insects of the widely distributed group Sialoidea, such as Sialis lutaria, that have large broad-based hind wings, produce aquatic larvae, and occur near water
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alderfly - dark-colored insect having predaceous aquatic larvaealderfly - dark-colored insect having predaceous aquatic larvae
neuropteran, neuropteron, neuropterous insect - insect having biting mouthparts and four large membranous wings with netlike veins
genus Sialis, Sialis - type genus of the Sialidae
References in periodicals archive ?
Actually, megaloptera is the insect order that includes fishflies, alderflies, and this column's insect horror star, the dobsonfly.
Lady Lever Art Gallery, Port Sunlight Village, 0151 478 4136, Sat, 20 Aug - Sun, 21 Aug Introduction to Lacewings Learn more about the ecology and identification of Alderflies, Lacewings, Scorpionflies and Waxflies.
Several specimens were infrequently encountered such as dryopids (long-toed water beetle; n = 1), elmids (riffle beetle; n = 2), and sialids (alderflies; n = 2) (Table 1).