Sialidae

plural noun

Si·​al·​i·​dae

sīˈaləˌdē

: a family of usually large insects (order Megaloptera) including the hellgrammite, alderflies, and related forms and having the hind wings broad at the base with their anal angle folding in plaits

Word History

Etymology

New Latin, from Sialis, type genus + -idae

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